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Class 9 Science Case Study Questions PDF Download

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Class 9 Science Case Study Questions play a crucial role in the field of science education as they provide real-life scenarios for students to analyze, apply their knowledge, and develop problem-solving skills. This article aims to present a comprehensive collection of case study questions for Class 9 Science , covering various topics and concepts.

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CBSE Class 9 Science Exam will have a set of questions based on case studies in the form of MCQs. The CBSE Class 9 Science Question Bank on Case Studies, provided in this article, can be very helpful to understand the new format of questions. Share this link with your friends.

If you want to want to prepare all the tough, tricky & difficult questions for your upcoming exams, this is where you should hang out.  CBSE Case Study Questions for Class 9  will provide you with detailed, latest, comprehensive & confidence-inspiring solutions to the maximum number of Case Study Questions covering all the topics from your  NCERT Text Books !

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CBSE Class 9th SCIENCE Chapterwise Case Study Question & Solution

Case study questions provide students with real-life scenarios that require critical thinking and application of scientific concepts. They help students understand the practical application of scientific principles and develop problem-solving skills in various scientific disciplines.

Chapterwise Case Study Questions for Class 9 Science

Inboard exams, students will find the questions based on assertion and reasoning. Also, there will be a few questions based on case studies. In that, a paragraph will be given, and then the MCQ questions based on it will be asked. For Science subjects, there would be 5 case-based sub-part questions, wherein a student has to attempt 4 sub-part questions.

• Case Study Questions for Chapter 1 Matter in Our Surroundings
• Case Study Questions for Chapter 2 Is Matter Around Us Pure?
• Case Study Questions for Chapter 3 Atoms and Molecules
• Case Study Questions for Chapter 4 Structure of Atom
• Case Study Questions for Chapter 5 The Fundamental Unit of Life
• Case Study Questions for Chapter 6 Tissues
• Case Study Questions for Chapter 7 Diversity in Living Organisms
• Case Study Questions for Chapter 8 Motion
• Case Study Questions for Chapter 9 Force and Laws of Motion
• Case Study Questions for Chapter 10 Gravitation
• Case Study Questions for Chapter 11 Work and Energy
• Case Study Questions for Chapter 12 Sound
• Case Study Questions for Chapter 13 Why do we Fall ill
• Case Study Questions for Chapter 14 Natural Resources
• Case Study Questions for Chapter 15 Improvement in Food Resources

The above  Case studies for Class 9 Science  will help you to boost your scores as Case Study questions have been coming in your examinations. These CBSE Class 9 Science Case Studies have been developed by experienced teachers of schools.studyrate.in for the benefit of Class 10 students.

Class 9 Maths Case Study Questions

Benefits of Case Studies in Science Education

Case studies offer several advantages over traditional teaching methods. Here are some key benefits:

• Real-World Application : Case studies present authentic scenarios, enabling students to understand how scientific concepts are applied in real-life situations.
• Critical Thinking : Analyzing case studies requires students to think critically, make connections, and apply scientific knowledge to solve problems.
• Interdisciplinary Approach : Case studies often involve multiple scientific disciplines, fostering an interdisciplinary understanding of complex issues.
• Engagement and Active Learning : Case studies actively engage students in the learning process, promoting active participation, discussion, and collaboration.
• Skill Development : Case studies develop essential skills such as analytical thinking, problem-solving, and effective communication of scientific concepts.

Importance of Practicing Case Study Questions

Practicing case study questions is crucial for Class 9 Science students to enhance their understanding and application of scientific concepts. Here’s why it is important:

• Application of Knowledge : Case studies allow students to apply their theoretical knowledge to practical situations, bridging the gap between theory and real-world scenarios.
• Developing Analytical Skills : Analyzing case studies improves students’ ability to identify relevant information, make connections, and draw logical conclusions.
• Problem-Solving Skills : Case studies present complex problems that require students to think critically and develop effective problem-solving strategies.
• Enhanced Exam Performance : Practicing case study questions familiarizes students with the format and types of questions they may encounter in exams, leading to improved performance.

Subjects Covered in the Case Study Questions for Class 9 Science

The case study questions for Class 9 Science cover the following subjects:

• Motion and Forces
• Light and Reflection
• Electricity
• Matter and Its Properties
• Atoms and Molecules
• Structure of the Atom
• Chemical Reactions
• Cell: The Fundamental Unit of Life
• Diversity in Living Organisms
• Natural Resources

Tips for Approaching Case Study Questions

To tackle case study questions effectively, consider the following tips:

• Read Carefully : Pay close attention to the details provided in the case study, as they hold crucial information for solving the problem.
• Analyze Methodically : Break down the problem into smaller components and analyze each part systematically.
• Apply Relevant Concepts : Identify the scientific principles relevant to the case study and apply them appropriately.
• Consider Multiple Perspectives : Explore different angles and viewpoints while proposing solutions, taking into account various scientific factors.
• Provide Justifications : Support your answers with scientific explanations and logical reasoning to strengthen your responses.

The Class 9 Science Case Study Questions provided in this article serve as a valuable resource for students seeking to enhance their scientific knowledge and problem-solving skills. By practicing these case studies, students can develop a deeper understanding of scientific concepts and their practical applications. Embrace this opportunity to engage with real-world scenarios and strengthen your scientific acumen.

Q1: Are the Class 9 Science Case Study Questions aligned with the official curriculum?

Yes, the Class 9 Science Case Study Questions presented in this article are aligned with the official curriculum. They cover relevant topics and concepts that students need to study for their exams.

Q2: Can practicing case study questions alone guarantee success in Class 9 Science exams?

Practicing case study questions is an important part of exam preparation, but it should be complemented with a thorough understanding of the subject matter. It is advisable to study the concepts in detail, refer to textbooks, and engage in other learning activities to achieve success in exams.

Q3: Where I Can get Class 9 Science Case Study Questions ?

You can practice Class 9 Science Case Study Questions on schools.studyrate.in for free.

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Class 9 Science Case Study Questions

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Download the app to get CBSE Sample Papers 2023-24, NCERT Solutions (Revised), Most Important Questions, Previous Year Question Bank, Mock Tests, and Detailed Notes.

If you are wondering how to solve class 9 science case study questions, then myCBSEguide is the best platform to choose. With the help of our well-trained and experienced faculty, we provide solved examples and detailed explanations for the recently added Class 9 Science case study questions.

You can find a wide range of solved case studies on myCBSEguide, covering various topics and concepts. Class 9 Science case studies are designed to help you understand the application of various concepts in real-life situations.

The rationale behind Science

Science is crucial for Class 9 students’ cognitive, emotional, and psychomotor development. It encourages curiosity, inventiveness, objectivity, and aesthetic sense.

In the upper primary stage, students should be given a variety of opportunities to engage with scientific processes such as observing, recording observations, drawing, tabulating, plotting graphs, and so on, whereas in the secondary stage, abstraction and quantitative reasoning should take a more prominent role in science teaching and learning. As a result, the concept of atoms and molecules as matter’s building units, as well as Newton’s law of gravitation, emerges.

Science is important because it allows Class 9 Science students to understand the world around us. It helps to find out how things work and to find solutions to problems at the Class 9 Science level. Science is also a source of enjoyment for many people. It can be a hobby, a career, or a source of intellectual stimulation.

Case study questions in Class 9 Science

The inclusion of case study questions in Class 9 science CBSE is a great way to engage students in critical thinking and problem-solving. By working through real-world scenarios, Class 9 Science students will be better prepared to tackle challenges they may face in their future studies and careers. Class 9 Science Case study questions also promote higher-order thinking skills, such as analysis and synthesis. In addition, case study questions can help to foster creativity and innovation in students. As per the recent pattern of the Class 9 Science examination, a few questions based on case studies/passages will be included in the CBSE Class 9 Science Paper. There will be a paragraph presented, followed by questions based on it.

Examples of Class 9 science class case study questions

Class 9 science case study questions have been prepared by myCBSEguide’s qualified teachers. Class 9 case study questions are meant to evaluate students’ knowledge and comprehension of the material. They are not intended to be difficult, but they will require you to think critically about the material. We hope you find Class 9 science case study questions beneficial and that they assist you in your exam preparation.

The following are a few examples of Class 9 science case study questions.

Class 9 science case study question 1

• due to its high compressibility
• large volumes of a gas can be compressed into a small cylinder
• transported easily
• all of these
• shape, volume
• volume, shape
• shape, size
• size, shape
• the presence of dissolved carbon dioxide in water
• the presence of dissolved oxygen in the water
• the presence of dissolved Nitrogen in the water
• liquid particles move freely
• liquid have greater space between each other
• both (a) and (b)
• none of these
• Only gases behave like fluids
• Gases and solids behave like fluids
• Gases and liquids behave like fluids
• Only liquids are fluids

Answer Key:

• (d) all of these
• (a) shape, volume
• (b) the presence of dissolved oxygen in the water
• (c) both (a) and (b)
• (c) Gases and liquids behave like fluids

Class 9 science case study question 2

• 12/32 times
• 18 g of O 2
• 18 g of CO 2
• 18 g of CH 4
• 1 g of CO 2
• 1 g of CH 4 CH 4
• 2 moles of H2O
• 20 moles of water
• 6.022  ×  1023 molecules of water
• 1.2044  ×  1025 molecules of water
• (I) and (IV)
• (II) and (III)
• (II) and (IV)
• Sulphate molecule
• Ozone molecule
• Phosphorus molecule
• Methane molecule
• (c) 8/3 times
• (d) 18g of CH ​​​​​4
• (c) 1g of H ​​​​​​2
• (d) (II) and (IV)
• (c) phosphorus molecule

Class 9 science case study question 3

• collenchyma
• chlorenchyma
• It performs photosynthesis
• It helps the aquatic plant to float
• It provides mechanical support
• Sclerenchyma
• Collenchyma
• Epithelial tissue
• Parenchyma tissues have intercellular spaces.
• Collenchymatous tissues are irregularly thickened at corners.
• Apical and intercalary meristems are permanent tissues.
• Meristematic tissues, in its early stage, lack vacuoles, muscles
• (I) and (II)
• (III) and (I)
• Transpiration
• Provides mechanical support
• Provides strength to the plant parts
• None of these
• (a) Collenchyma
• (b) help aquatic plant to float
• (b) Sclerenchyma
• (d) Only (III)
• (c) provide strength to plant parts

Cracking Class 9 Science Case Study Questions

There is no one definitive answer to Class 9 Science case study questions. Every case study is unique and will necessitate a unique strategy. There are, nevertheless, certain general guidelines to follow while answering case study questions.

• To begin, double-check that you understand the Class 9 science case study questions. Make sure you understand what is being asked by reading it carefully. If you’re unclear, seek clarification from your teacher or tutor.
• It’s critical to read the Class 9 Science case study material thoroughly once you’ve grasped the question. This will provide you with a thorough understanding of the problem as well as the various potential solutions.
• Brainstorming potential solutions with classmates or other students might also be beneficial. This might provide you with multiple viewpoints on the situation and assist you in determining the best solution.
• Finally, make sure your answer is presented simply and concisely. Make sure you clarify your rationale and back up your claim with evidence.

A look at the Class 9 Science Syllabus

The CBSE class 9 science syllabus provides a strong foundation for students who want to pursue a career in science. The topics are chosen in such a way that they build on the concepts learned in the previous classes and provide a strong foundation for further studies in science. The table below lists the topics covered in the Class 9 Science syllabus of the Central Board of Secondary Education (CBSE). As can be seen, the Class 9 science syllabus is divided into three sections: Physics, Chemistry and Biology. Each section contains a number of topics that Class 9 science students must study during the course.

CBSE Class 9 Science (Code No. 086)

Theme: Materials Unit I: Matter-Nature and Behaviour Definition of matter; solid, liquid and gas; characteristics – shape, volume, density; change of state-melting (absorption of heat), freezing, evaporation (cooling by evaporation), condensation, sublimation. Nature of matter:  Elements, compounds and mixtures. Heterogeneous and homogenous mixtures, colloids and suspensions. Particle nature and their basic units:  Atoms and molecules, Law of constant proportions, Atomic and molecular masses. Mole concept: Relationship of mole to mass of the particles and numbers. Structure of atoms:  Electrons, protons and neutrons, valency, the chemical formula of common compounds. Isotopes and Isobars.

Theme: The World of the Living Unit II: Organization in the Living World Cell – Basic Unit of life:  Cell as a basic unit of life; prokaryotic and eukaryotic cells, multicellular organisms; cell membrane and cell wall, cell organelles and cell inclusions; chloroplast, mitochondria, vacuoles, endoplasmic reticulum, Golgi apparatus; nucleus, chromosomes – basic structure, number. Tissues, Organs, Organ System, Organism: Structure and functions of animal and plant tissues (only four types of tissues in animals; Meristematic and Permanent tissues in plants).

Theme: Moving Things, People and Ideas Unit III: Motion, Force and Work Motion:  Distance and displacement, velocity; uniform and non-uniform motion along a straight line; acceleration, distance-time and velocity-time graphs for uniform motion and uniformly accelerated motion, derivation of equations of motion by graphical method; elementary idea of uniform circular motion. Force and Newton’s laws:  Force and Motion, Newton’s Laws of Motion, Action and Reaction forces, Inertia of a body, Inertia and mass, Momentum, Force and Acceleration. Elementary idea of conservation of Momentum. Gravitation:  Gravitation; Universal Law of Gravitation, Force of Gravitation of the earth (gravity), Acceleration due to Gravity; Mass and Weight; Free fall. Floatation:  Thrust and Pressure. Archimedes’ Principle; Buoyancy. Work, energy and power:  Work done by a Force, Energy, power; Kinetic and Potential energy; Law of conservation of energy. Sound:  Nature of sound and its propagation in various media, speed of sound, range of hearing in humans; ultrasound; reflection of sound; echo.

Theme: Food Unit IV: Food Production Plant and animal breeding and selection for quality improvement and management; Use of fertilizers and manures; Protection from pests and diseases; Organic farming.

PRESCRIBED BOOKS:

• Science-Textbook for class IX-NCERT Publication
• Assessment of Practical Skills in Science-Class IX – CBSE Publication
• Laboratory Manual-Science-Class IX, NCERT Publication
• Exemplar Problems Class IX – NCERT Publication

myCBSEguide: A true helper

There are numerous advantages to using myCBSEguide to achieve the highest results in Class 9 Science.

• myCBSEguide offers high-quality study materials that cover all of the topics in the Class 9 Science curriculum.
• myCBSEguide provides practice questions and mock examinations to assist students in the best possible preparation for their exams.
• On our myCBSEguide app, you’ll find a variety of solved Class 9 Science case study questions covering a variety of topics and concepts. These case studies are intended to help you understand how certain principles are applied in real-world settings
• myCBSEguide is that the study material and practice problems are developed by a team of specialists who are always accessible to assist students with any questions they may have. As a result, students may be confident that they will receive the finest possible assistance and support when studying for their exams.

So, if you’re seeking the most effective strategy to study for your Class 9 Science examinations, myCBSEguide is the place to go!

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Case Study Questions Class 9 Science The Fundamental Unit of Life

Case study questions class 9 science chapter 5 the fundamental unit of life.

CBSE Class 9 Case Study Questions Science The Fundamental Unit of Life. Important Case Study Questions for Class 9 Exam. Here we have arranged some Important Case Base Questions for students who are searching for Paragraph Based Questions The Fundamental Unit of Life.

At Case Study Questions there will given a Paragraph. In where some Questions will made on that respective Case Based Study. There will various types of marks will given 1 marks, 2 marks, 3 marks or 4 marks.

CBSE Case Study Questions Class 9 Science – The Fundamental Unit of Life

All living Organisms are made up of cells and these cells perform all the functions essential for the survival of the Organism eg. Respiration, digestion, excretion etc. In Unicellular organisms, a single cell carries out all these functions and in multicellular organisms different group of cells carry out different functions.

Cells were first discovered by Robert Hooke in 1665. He observed the cells in a cork slice with the help of a primitive microscope. Leeuwenhoek (1674), with the improved microscope, discovered the free living cells in pond water for the first time. It was Robert Brown in 1831 who discovered the nucleus in the cell. Purkinje in 1839 coined the term ‘protoplasm’ for the fluid substance of the cell.

(1) Who discovered the cell?

(a) Robert Hooke

(b) Leeuwenhoek

(c) Robert Brown

(d) T. Schwann

(2) Who discovered the nucleus in the cell?

(3) Who coined the term ‘Protoplasm’?

(d) Purkinje

(4) What is protoplasm?

(a) Unit of life

(b) Cell organelle

(c) Fluid substance of the cell.

(d) Cytoplasm

(5) Which of these statement is true about the cell?

(a) All organism are made up of cell

(b) Cell is the basic unit of life

(c) Cell is responsible for different metabolic functions

(d) All above

The cell theory, that all the plants and animals are composed of cells and that the cell is the basic unit of life, was presented by two biologists, German zoologist Schleiden (1838) and British zoologist Schwann (1839). The cell theory was further expanded by Virchow (1855) by suggesting that all cells arise from pre-existing cells. With the discovery of the electron microscope in 1940, it was possible to observe and understand the complex structure of the cell and its various organelles.

(1) Theodore Schwann was a _____

(a) British zoologist

(b) German zoologist

(c) British botanist

(d) German botanist

(2) Matthias Schleiden was a _____

(a) German zoologist

(b) British zoologist

(c) German botanist

(d) British botanist

(3) Which of these scientists formulated the cell theory?

(a) Schleiden and Schwann

(b) Rudolf Virchow

(c) Robert Koch

(d) Antony Von Leeuwenhoek

(4) Which scientist was the first to explain that new cells arise from pre-existing cells?

(a) Antony Von Leeuwenhoek

(b) Matthias Schleiden

(c) Rudolph Virchow

(d) Theodore Schwann

(5) Which of these scientists did not contribute to the cell theory?

(a) Robert Koch

(c) Theodore Schwann

(d) Rudolph Virchow

Plasma membrane or Cell membrane is the outermost covering of the cell that separates the contents of the cell from its external environment. The plasma membrane is flexible and is made up of organic molecules called lipids and proteins. The flexibility of the cell membrane also enables the cell to engulf in food and other material from its external environment. Such processes are known as endocytosis.The plasma membrane allows or permits the entry and exit of some materials in and out of the cell. It also prevents movement of some other materials. The cell membrane, therefore, is called a selectively permeable membrane.

Some substances like carbon dioxide or oxygen can move across the cell membrane by a process called diffusion. There is spontaneous movement of a substance from a region of high concentration to a region where its concentration is low. Similar thing happens in cells – some substance like CO2 (carbon dioxide is cellular waste and requires to be excreted out by the cell) accumulates in high concentrations inside the cell. In the cell’s external environment, the concentration of CO2 is low as compared to that inside the cell. As soon as there is a difference of concentration of CO2 inside and outside a cell, CO2 moves out of the cell, from a region of high concentration, to a region of low concentration outside the cell by the process of diffusion.

Water obeys the law of diffusion. The movement of water molecules through such a selectively permeable membrane is called osmosis. The movement of water across the plasma membrane is also affected by the amount of substance dissolved in water. Thus, osmosis is the net diffusion of water across a selectively permeable membrane toward a higher solute concentration.

(1) The plasma membrane is made up of ___________

(a) Proteins

(c) Proteins and Lipids (Lipoproteins)

(d) none of above

(2) Which of the following substance is known as cellular waste?

(b) Nitrogen

(c) Carbon dioxide

(d) None of above

(3) The movement of a substance from the region of higher concentration to the region where its concentration is lower is called as _____________

(a) Osmosis

(b) Diffusion

(c) Excretion of CO2 (carbon dioxide)

(4) Why cell membrane is known as selectively permeable membrane?

(5) What is mean by diffusion?

(6) Define Osmosis.

(d) Cell membrane allows or permits the entry and exit of some materials in and out of the cell. It also prevents movement of some other materials. Hence it is called as selectively permeable membrane.

(e) It is spontaneous movement of a substance from a region of high concentration to a region where its concentration is low. For example, some substances like carbon dioxide or oxygen can move across the cell membrane by a process called diffusion.

Plant cells, in addition to the plasma membrane, have another rigid outer covering called the cell wall. The cell wall lies outside the plasma membrane. The plant cell wall is mainly composed of cellulose. Cellulose is a complex substance and provides structural strength to plants. When a living plant cell loses water through osmosis there is shrinkage or contraction of the contents of the cell away from the cell wall. This phenomenon is known as plasmolysis.

(1) Which of the following is the main constituent of cell wall?

(c) Lipoproteins

(d) Cellulose

(2) Which of the following is outer most covering of the plant cell?

(a) Cell membrane

(b) Plasma membrane

(c) Cell wall

(3) Choose the correct set of statements from the following.

Statement 1 – Cell wall lies outside the plasma membrane.

Statement 2 – Cell wall is mainly composed of cellulose.

Statement 3 – Cellulose is a complex substance and provides structural strength to plants.

Statement 4 – Cell wall lies outside the plasma membrane.

(a) Statement 1 & 3

(b) Statement 1 & 2

(c) Statement 3 & 4

(d) All statement are correct

(4) What is mean by plasmolysis?

(5) What is the reason behind structural strength of plant cell?

(4) When living plant cell loses water through osmosis there is contraction of the contents of the cell away from the cell wall. This phenomenon is called as plasmolysis.

(5) The plant cell wall is mainly composed of cellulose. Cellulose is a complex substance and provides structural strength to plants.

Every cell has a membrane around it to keep its own contents separate from the external environment. Large and complex cells, including cells from multicellular organisms, need a lot of chemical activities to support their complicated structure and function. To keep these activities of different kinds separate from each other, these cells use membrane-bound little structures within themselves. The cytoplasm is the jelly like fluid content inside the plasma membrane which contains many specialised cell organelles. Such as Endoplasmic Reticulum, Golgi apparatus, Lysosomes, Ribosomes, Nucleus, Chloroplast, Mitochondria and Plastids.Each of these organelles performs a specific function for the cell. Some of these organelles are visible only with an electron microscope. They are important because they carry out some very crucial functions in cells.

(1) Identify the statement which is true for cells.

Statement 1 – Some cell organelles are visible only with an electron microscope.

Statement 2 – Cytoplasm is jelly like fluid present inside the cell.

Statement 3 – Cell organelles perform all the functions in cell.

Statement 4 – Every cell has a membrane around it to keep its own contents separate from the external environment.

(b) Statement 2 & 4

(c) Statement 1 & 4

(d) All statement are true.

(2) A suitable term for the various components of cells is ________

(b) cell organelles

(c) chromosomes

(3) The jelly-like fluid substance present in cells is called __________

(a) Protoplasm

(b) Chromosome

(c) Chloroplast

(4) What is cell organelles?

(5) Enlist the any five cell organelles.

(4) Cell organelles are the specialized organelles present with in the cells these organelles are involved in carrying out essential functions.

(5) Endoplasmic Reticulum, Golgi apparatus, Lysosomes, Ribosomes, Nucleus, Chloroplast, Mitochondria and Plastids.

The endoplasmic reticulum is a large network of membrane-bound tubes and sheets. It looks like long tubules or round or oblong bags (vesicles). It is discovered by Porter and Thompson.  The ER membrane is similar in structure to the plasma membrane. There are two types of ER– rough endoplasmic reticulum (RER) and smooth endoplasmic reticulum (SER). RER looks rough under a microscope because it has particles called ribosomes attached to its surface. The ribosomes, which are present in all active cells, are the sites of protein manufacture. The manufactured proteins are then sent to various places in the cell depending on need, using the ER. The SER helps in the manufacture of fat molecules, or lipids, important for cell function. Some of these proteins and lipids help in building the cell membrane. This process is known as membrane biogenesis. Some other proteins and lipids function as enzymes and hormones. Although the ER varies greatly in appearance in different cells, it always forms a network system.

(1) Who discovered endoplasmic reticulum?

(a) Porter and Thompson

(b) Robert Brown

(c) Robert Hooke

(d) Koshland

(2) Which are the components of endoplasmic reticulum__________

(a) Cisternae, tubules and vesicles.

(b) Cisternae, chromatids and vacuoles

(c) Both a and b

(d) None of the above

(3) Endoplasmic reticulum membrane which is associated with ribosomes is called_______

(a) ER lumen

(b) Smooth endoplasmic reticulum

(c) Rough endoplasmic reticulum

(d) Endosome

(4) Enlist the types of Endoplasmic Reticulum.

(5) Define membrane biogenesis?

(4) Smooth endoplasmic reticulum and Rough endoplasmic reticulum

(5) The SER helps in the manufacture of fat molecules, or lipids, important for cell function. Some of these proteins and lipids help in building the cell membrane. This process is known as membrane biogenesis.

The Golgi apparatus, first described by Camilo Golgi, consists of a system of membrane-bound vesicles (flattened sacs) arranged approximately parallel to each other in stacks called cisterns. These membranes often have connections with the membranes of ER and therefore constitute another portion of a complex cellular membrane system. The material synthesised near the ER is packaged and dispatched to various targets inside and outside the cell through the Golgi apparatus. Its functions include the storage, modification and packaging of products in vesicles. In some cases, complex sugars may be made from simple sugars in the Golgi apparatus. The Golgi apparatus is also involved in the formation of lysosomes

(d) Camilo Golgi

(2) A system of membrane-bound flattened sacs arranged approximately parallel to each other in stacks are called as _________

(a) Cisterns

(b) Vesicles

(c) Golgi complex

(d) Vacuoles

(3) Membrane bound flattened sacs is termed as _________

(4) Enlist the function of Golgi apparatus.

(5) Name the cell organelles which is involved in the formation of lysosomes?

(4) Functions of Golgi apparatus:

• Storage, modification and packaging of products
• Involved in formation of lysosomes

(5) Golgi apparatus

It’s a suggestion that tries to give all the questions in mcq types in case/paragraph-based questions or if you are putting question-based kindly put only very short answer types questions like one word or one sentence it’s more helpful to all. Rest it’s really good information and provides ideas to us.

Ok Dibya, We will design this page

tomorrow is my science final papper. this case study is come in my papper than i am very happy.

This very helpful casebased questions Thanku for this

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Case Study Questions of Chapter 1 Matter in our Surroundings PDF Download

Case study Questions on Class 9 Science Chapter 1 are very important to solve for your exam. Class 9 Science Chapter 1 Case Study Questions have been prepared for the latest exam pattern. You can check your knowledge by solving case study-based questions for Class 9 Science Chapter 1 Matter in our Surroundings

In CBSE Class 9 Science Paper, Students will have to answer some questions based on Assertion and Reason. There will be a few questions based on case studies and passage-based as well. In that, a paragraph will be given, and then the MCQ questions based on it will be asked.

Matter in our Surroundings Case Study Questions With answers

Here, we have provided case-based/passage-based questions for Class 9 Science  Chapter 1 Matter in our Surroundings

Case Study/Passage-Based Questions

Question 1:

There are three states of matter – solid, liquid, and gas.

Solids  have a definite shape, distinct boundaries, and fixed volumes, that is, have negligible compressibility. Solids have a tendency to maintain their shape when subjected to outside force. Solids may break under force but it is difficult to change their shape, so they are rigid.

Liquids  have no fixed shape but have a fixed volume. They take up the shape of the container in which they are kept. Liquids flow and change shape, so they are not rigid but can be called fluid.

Gas  has an indefinite shape and no fixed volume. Gas gets the shape and volume of the container.

Gas has very low density hence is light. Gas can flow easily and hence is called fluid.

i.) Which of the following state of matter takes shape of the container in which it is filled?

d.) Both b and c

Answer: d.) Both b and c

ii.) Distance between particles of matter least in

d.) None of these

Answer: a.) Solid

iii.) Compressibility is least in case of

Hope the information shed above regarding Case Study and Passage Based Questions for Class 9 Science Chapter 1 Matter in our Surroundings with Answers Pdf free download has been useful to an extent. If you have any other queries about CBSE Class 9 Science Matter in our Surroundings Case Study and Passage Based Questions with Answers, feel free to comment below so that we can revert back to us at the earliest possible

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CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 PDF Download

CBSE Class 9 Science (Term-1) 2021-22 Set 1 is a compilation of 3 subjects: Physics, Chemistry and Biology. Those students who are preparing for their CBSE Class 9 Science (Term-1) 2021-22 Set 1 exam should solve CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 because it will help them understand how questions are asked in this subject.

With the help of CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1, students can get clues about the annual question papers as well as the difficulty level of question papers. 

In this article, we’ve given the CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 PDF along and a few preparation tips so that you can better utilise the CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1. 

CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 with Solutions

The goal of providing the CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 with Solutions is to help students better develop an understanding of the annual examinations. Especially, solutions of CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 is an important study resource for Class 9 students as they can use them to practice the questions. The solutions are prepared by subject matter experts to assist students to develop a better methodology to answer the questions of the annual examination.

The answer to Science (Term-1) 2021-22 Set 1 questions is explained in an illustrative manner so, that those who are reading them can better comprehend them. Links to download CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 PDF along with solutions are mentioned on this page.

CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 PDF

Science (Term-1) 2021-22 Set 1 examination is held for a total of 100 Marks but the theory exam is conducted for a total of 80 Marks and the remaining 20 marks are given according to the internal assessment/Practical. This is a marking scheme; to better understand how marks are distributed throughout the actual annual exam question paper, students should solve CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 PDF. 

A good understanding of the Class 9 Science (Term-1) 2021-22 Set 1 marking scheme will help candidates better prepare for the exam as well as better perform in Class 9 final examination. Since the questions are asked referring to all the chapters of Class 9 Science (Term-1) 2021-22 Set 1 as per the Class 9 Syllabus, it becomes very important for candidates to use CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 with Marking Scheme.

How to Download CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 in PDF for Free?

Anyone who wants to gather information about the upcoming Class 9 Science (Term-1) 2021-22 Set 1 annual examination can refer to the below-given steps to download the CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 PDF.

• Open the Selfstudys website by typing on your browser
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• A new page will load containing Sample Papers for various subjects, you have to click on Science (Term-1) 2021-22 Set 1

• It will open another page, where you can finally search or download the CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1.

3 Reasons To Use CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1

Every individual student of Class 9 spends an enormous time on final exam preparation. Especially, for majors subject like Science (Term-1) 2021-22 Set 1 they think will add great value to their overall academic growth. While preparing for Science (Term-1) 2021-22 Set 1 they refer to several study resources, but all of them are not adequate except CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1. Therefore, in this section, we have mentioned 3 Reasons to use CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 PDF.

• To Get Clarity on Question Type: Class 9 Science (Term-1) 2021-22 Set 1 questions can be asked in any form, whether it is objective, true-false, short answer types of questions, long answer types of questions and much more. This creates confusion among many students and so, the CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 should be used while preparing as they follow the actual exam pattern of Class 9 Science (Term-1) 2021-22 Set 1. In another word, it gives students clarity on what types of questions can be asked.
• For Practice Purpose: The Chapter end questions aren’t enough and so, the CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 PDF is a great tool to practice questions.
• To Boost the Confidence Level: Being able to solve CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 boosts confidence because questions are asked from the whole Class 9 syllabus. And being able to solve the questions of CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 shows that your preparation is good enough to score high marks in the annual examination.

How To Use CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 for Final Exam Preparation?

There are a plethora of ways to take advantage of the CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 final exam preparation; a few of them are mentioned here -

• For revision: If you are bored of using the CBSE Class 9 Revision notes then you can try to solve CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 because solving the question papers of CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 helps you recall whatever you have studied in your previous classes.
• To Practice: There’s no doubt, the CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 is the best practice tool you can use. It helps you understand a variety of questions from the final exam perspective.
• For Self-evaluation purposes: Want to know how well you have prepared for the Science (Term-1) 2021-22 Set 1 paper? Being able to find your weak and strongest areas by yourself in the subject is known as a self-evaluation process which you can do by solving the CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 PDF.

Things to Keep in Mind While Using CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 with Solutions

Every individual student has the ability to think about how they should use CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 with Solutions for higher profit; however, we have tried here to list a few things that all Class 9 students should keep in mind while using the CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 with Solutions. 

• Understand the guidelines or instructions first: The first page of the CBSE Class 9 Science (Term-1) 2021-22 Set 1 Question paper or Sample paper contains guidelines or instructions that help students how the questions are divided in this question paper and how many marks they carry. Therefore, CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 solutions and Answer keys should be used to understand such things before writing the answers to the questions asked in CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 PDF.
• Solve Easy Questions First: You will find several questions in CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 ranging from different difficulty levels, in that case, you should solve easy questions first as it will help you boost your confidence and push you to try those questions which seem hard to answer.
• Follow the instructions properly: The main motive of this point is to help you understand to not exceed the word count as mentioned in the instructions of CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1. In a few questions of Class 9 Science (Term-1) 2021-22 Set 1, you will not get a clear idea of how much you should write, but standard parameters have been set for different types of questions; for example, long answer types of questions should be written between 100 to 150 words or more if required.
• Get hints or detailed explanations for challenging questions: The subject matter experts at Selfstudys know the challenging part of CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 and that is why they have prepared the detailed solutions of CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 PDF. If you are stuck on some questions in the sample paper then without any hesitation you should use CBSE Sample Paper Class 9 Science (Term-1) 2021-22 Set 1 solutions and Answer keys so that you improve on them.

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NCERT Solutions for Class 9 Science Chapter 1 - Matters In Our Surroundings

• NCERT Solutions
• Chapter 1 Matters In Our Surroundings

NCERT Solutions for Class 9 Science Chapter 1 - Matter in Our Surroundings

The NCERT Answer for Class 9 Science Chapter 1 was written with the sole purpose of assisting students in obtaining more marks and improving their grades in mind. The answer for class 9 Science chapter 1 addresses students' academic expectations and needs. The themes in Chapter 1 on Matter in Our Surroundings are covered in accordance with the CBSE syllabus . The solution's strategy incorporates a step-by-step method that assists in improved knowledge of the issues.

NCERT Solution of class 9 Science chapter 1 has been created, keeping in mind the primary goal of helping students to secure more marks and improve grades. The academic requirements and needs of students have been addressed in the solution for class 9 Science chapter 1. The topics in chapter 1 related to Matter in Our Surrounding are discussed according to the CBSE syllabus. The approach in the solution involves a step-by-step process which aids in better comprehension of the topics.

CBSE class 9 Science chapter 1 solutions explain all the foundational concepts in detail for students to understand better. The solutions are made available to everybody over the Vedantu app. These free PDFs can be downloaded easily from Vedantu’s official portal. 

You can also download NCERT Solutions for Class 9 Maths and NCERT Solution for Class 9 Science to help you to revise complete syllabus and score more marks in your examinations.

Access NCERT solutions for Class 9 Science Chapter – 1 Matter in our Surroundings

Intext exercise -1.

1. Which of the following are the matter?

Chair, air, love, smell, hate, almonds, thought, cold, cold drink, smell of perfume.

Ans: Matter is anything that occupies space and has some mass. There are three states of matter called Solid, Liquid and Gas. On the basis of these three states, we can define that which of this is a matter:

Chair and almond are said to be in a solid state of matter as these have fixed shape., cold drink is in liquid state as it has the tendency to flow., air and the smell of perfume have gaseous particles which are free to move so this will also be considered as a gaseous state of matter..

While Love, hate, cold, smell and thought are not having any mass or neither do they occupy space these are just emotions or sensations felt by human beings so they are not considered as matter.

2. Give reasons for the following observation:

The smell of hot sizzling food reaches you several meters away, but to get the smell from cold food you have to go close.

Ans: The smell of hot sizzling food prepared by our mom reaches to us in our room from kitchen but if the food gets cold after some time, we did not feel any smell of that food this phenomenon can be defined on the basis of rate of diffusion which gets increases when the temperature get increases as high temperature increases the kinetic energy of food particles to get diffused in air. The temperature of hot food particles is high as compared to old one so its molecules get easily diffused in the air as compared to cold ones.

3: a diver is able to cut through water in a swimming pool. which property of matter does this observation show, ans: this can be explained on the properties of matter to attract the particles towards themselves and this will also decide their shape and rigidity. the force of attraction is highest in case of solid as compared to liquid and gas this defines that particles of solid are tightly bound to each other. while in case of liquid particles they have less forces of attraction which defines that there is space between the particles and due to this reason that we can cut them easily. that is why we can say that due to less forces of attraction between water molecules a diver is able to cut through water in a swimming pool., 4: what are the characteristics of particles of matter, ans: matter is anything that occupies space and has some mass. there are three states of matter called solid, liquid and gas., the main characteristics of matter can be described as follows:, particles of matter have space between them and the order of spacing is highest in gas after that liquid and solid have very less space between their particles., particles of matter are continuously moving in all the three states of matter., particles of matter attract each other with strong forces which help them to bind with each other. in solid particles attraction is very high whereas in liquid it is low and in gases it is quite low. , intext exercise -2.

1: The mass per unit volume of a substance is called density (density = mass/volume). Arrange the following in order of increasing density − air, exhaust from chimney, honey, water, chalk, cotton, and iron.

Ans: Density is depending on mass and volume hence higher the mass higher will be the density and out of these heavier particles have higher mass as compare to lighter one so the order of increasing density of given substances can be written as follows:

Air < Exhaust from chimney < Cotton < Water < Honey < Chalk < Iron.

Tabulate the differences in the characteristics of states of matter.

Matter is anything that occupies space and has some mass. There are three states of matter called Solid, Liquid and Gas.

Comment upon the following: rigidity, compressibility, fluidity, filling a gas container, shape, kinetic energy, and density.

Ans:  

Rigidity: it is defined as the tendency of matter to resist a change in shape..

Compressibility: The ability of matter to reduce in volume when any type of external force is applied on it. 

Fluidity: Tendency of particles to flow this property can be seen in case of liquid and gases which can also be known as fluids. 

Filling a Gas Container: Gases neither have definite shape nor have definite volume. Gases take the shape of that container in which it gets filled. Hence by filling a gas container, it means the attainment of shape of the container by the gas.

Shape: Shape corresponds to fixed volume and boundary. Only solids have a fixed shape.

Kinetic Energy: Particles which produce energy possessed due to its continuous motion.

Density: It is defined as the mass per unit volume.

3: Give Reasons:

A Gas Fills Completely the Vessel in Which it is Kept.

The gas particles have a tendency to move freely in all directions as they have very less force of attraction between their particles. Like water, gas can also take the shape of the container in which it is kept. Therefore, we can say that gas completely fills the vessel in which it is kept.

A Gas Exerts Pressure on the Walls of the Container.

The gas particles move freely due to its lesser forces of attraction between the particles. Therefore, these gaseous particles continuously collide with each other and with the walls of the container with a greater force. Pressure is known as the force produced by the gas particles per unit area. By this we can say that gas exerts pressure on the walls of the container.

A wooden table should be called a solid.

A wooden table is very rigid in nature which means that it has a definite shape and its shape cannot be changed easily and has definite volume too. The shape is fixed due to strong intermolecular forces hence it attains all the properties of solid therefore, it is considered as a solid.

We can easily move our hands in air, but to do the same through a solid block of wood, we need a karate expert.

Air particles have very less forces of attraction between their particles so they have large space in between them. But wood has very little space between the particles due to its high force of attraction therefore, wood is considered to be of rigid nature. Due to this reason, we can easily move our hands in air but the same will not happen through a solid block of wood. For this we need a karate expert.

4: Liquids generally have lower density as compared to solids. But you must have observed that ice floats on water. Find out why.

Ans: as we know that density is defined as the mass per unit volume. this corresponds with the increase of the volume of any substance density will decrease as they are inversely proportional to each other. .

Ice is solid in nature therefore it contains strong intermolecular forces which tightly bound them and they contain lesser volume but on the other hand liquid has tendency to move freely due to weak intermolecular forces and contain large volume.

From this we can say that water has larger volume and lesser density so it has a tendency to float on water.

Intext Exercise -3

1: convert the following temperature to celsius scale:.

Celsius and Kelvin are two main scales to measure the temperature. By subtracting the 273K from the given value we can get the value in degrees Celsius. The formula corresponds to degree Celsius can be shown as:

\[X{}^\circ C=(X-273)\]

\[300K=(300-273){}^\circ C=27{}^\circ C\]

 573 K

$573K=(573-273){}^\circ C=300{}^\circ C$

2: What is the physical state of water at:

$\mathbf{\text{25}{{\text{0}}^{\text{o}}}\text{C}}$

Ans: Physical state corresponds to the state of matter whether it exists in solid, liquid or gas.

$\text{25}{{\text{0}}^{\text{o}}}\text{C}$– As we know that water starts boiling at 100°C and above this temperature water exists in gaseous state.         So, this defines that water at 250°C exists in a gaseous state.

$\mathbf{{{100}^{o}}C}$

${{100}^{o}}C$ – It is the starting point where water starts boiling so at this temperature water exists in both liquid and gaseous states.

3: For any substance, why does the temperature remain constant during the change of state?

Ans: this can be explained as the whole heat which we are providing to the substance to increase its temperature is used to break the intermolecular forces of attraction between them. this heat will also correspond to the latent heat i.e., the heat which gets absorbed or released during change of state. hence all the energy gets used so temperature remains constant. , 4: suggest a method to liquefy atmospheric gases., ans: atmospheric gases can be defined as the gases present in the atmosphere. it can be liquified i.e., converted into liquid by applying suitable conditions of applying pressure and by reducing their temperature., intext exercise -4, 1: why does a desert cooler cool better on a hot dry day, ans: this can be explained by the process called evaporation, this is the process in which the liquid particles absorb energy from the surroundings and cause cooling. the rate of evaporation generally depends on the amount of water vapour present in the air. if the amount of water vapor present in air is more than the rate of evaporation is more or vice-versa. on a hot dry day, the amount of water vapor present in air is quite low so this will evaporate easily and make its surroundings cooler. thus, from this we can say that a desert cooler cools better on a hot dry day as compared to rainy one., 2: how does water kept in an earthen pot (matka) become cool during summers, ans: an earthen pot or matka is generally made up of sand particles in which many tiny pores exist and this helps the water inside the pot to evaporate and surroundings makes the water cool. this is the reason why people kept the water in an earthen pot during summers., 3: why does our palm feel cold when we put some acetone or petrol or perfume on it, ans: acetone, petrol or perfume are considered as organic compounds which are volatile in nature whereas volatile substances are those which easily get vaporized and go through the process of evaporation. we know that during the process of evaporation particles of these organic liquids absorb energy from the surroundings or the surface of the palm and make the surroundings or surface of the palm somewhat cool. this is the reason why our palm feels cold when we put some acetone, petrol or perfume on it. , 4: why are we able to sip hot tea or milk faster from a saucer than a cup, ans: this can also be explained on the basis of rate of evaporation as we know that evaporation produces a cooling effect and evaporation depends on the surface area, larger the surface area higher the evaporation. as in saucer the area is larger as compared to cup so evaporation will be high in case of greater surface area. thus, we can say that liquid cools faster in a saucer than in a cup and due to this reason, we are able to sip hot tea or milk faster from a saucer than a cup., 5: what type of clothes should we wear in the summer, ans: in summer we usually sweat so we have to wear cotton or light-colored clothes because cotton or light-colored clothes can absorb more sweat from our body and transfers the sweat which is in the form of liquid to the atmosphere and makes the evaporation process faster. evaporation process causes a cooling effect which makes our body cool in cotton clothes as compared to synthetic or woolen ones. , ncert exercise, 2: convert the following temperature to kelvin scale:.

$\mathbf{25{}^\circ C}$

Celsius and Kelvin are two main scales to measure the temperature. By adding the 273K from the given value we can get the value in degrees Celsius. The formula corresponds to degree Celsius can be shown as:

\[0{}^\circ C=273K\]

\[{{27}^{o}}C=(27+273)K=300K\]

$\mathbf{373{}^\circ C}$

${{373}^{o}}C=(373+273)K=646K$

3: Give reason for the following observations.

Naphthalene balls disappear with time without leaving any solid.

This phenomenon can be explained on the basis of sublimation which defines that solid is directly converted into gaseous form without turning it into liquid. naphthalene is one that substances which undergo through the process of sublimation easily at room temperature. that is why we can say that naphthalene balls disappear after some time without leaving any solid., we can get the smell of perfume sitting several meters away., gaseous particles have very less internuclear forces due to which its molecules are very free to move and it possesses high kinetic energy. due to this reason particles of perfumes diffuse into the atmosphere and its molecules will mix in the environment which enables us to smell the perfume from several meters away., 4: arrange the following substances in increasing order of forces of attraction between particles − water, sugar, oxygen., ans: forces of attraction is the attracting power of molecules which keep them together and intermolecular forces are very strong in case of solid as compared to liquid or gas. , here sugar is said to be solid and contains higher forces of attraction., water is liquid comparatively containing lesser forces of attraction but higher as compared to gases., oxygen is a gas which contains very less attraction between forces., thus, the increasing order of forces of attraction between the particles of water, sugar and oxygen is.

Oxygen < Water < Sugar

5: What is the physical state of water at:

$\mathbf{{{25}^{o}}C}$

Ans: Physical state corresponds to the state of matter whether it exists in solid, liquid or gas. 

$25{}^\circ C$– As we know that water melts at 0°C and above this temperature water exists in liquid state.         So, this defines that water at 25°C exists in a liquid state

$\mathbf{{{0}^{o}}C}$

Ans: $0{}^\circ C$– It is the temperature at which water starts melting i.e., water gets converted into liquid from ice so at this temperature water exists as both solid and liquid state. 

Ans: $100{}^\circ C$– It is the starting point where water starts boiling so at this temperature water exists in both liquid and gaseous states.

6: Give two reasons to justify:

water at room temperature is a liquid.

We find water is in liquid state at room temperature this can be justified as follows:

Water does not have any fixed shape; it can take the shape of the container in which it is kept and water has definite volume.

It has a tendency to flow.

Have weak intermolecular forces between their particles.

These all describe the property of liquid so we can say that water is liquid at room temperature.

An Iron Almirah is a Solid at Room Temperature.

Iron almirah kept in our room is said to be solid due to following reasons:

It has a fixed shape and definite volume.

It contains strong intermolecular forces between their particles.

Rigid in nature, difficult to compress.

These all describe the property of solid so we can say that almirah is solid at room temperature.

7: Why is ice at 273 K more effective in cooling than water at the same temperature?

Ans: here condition given that both ice and water are at same temperature i.e. 273 k. but ice at 273 k has less energy as compared to water this can be explained on the basis of latent heat of fusion which is possessed by water as an additional energy but ice does not have such type of energy. therefore, we can say that at 273 k ice is more effective in cooling as compared to water., 8: what produces more severe burns, boiling water or steam, ans: steam and water both are said to be at the same temperature i.e., 373 k. but steam contains more energy as compared to boiling water. this can be explained on the basis of latent heat of fusion which is possessed by water as an additional energy. therefore, steam produces more severe burns than boiling water., 9: name a, b, c, d, e and f in the following diagram showing change in its state..

A is the process of converting solid into liquid is called Melting.

B is the process which converts liquid into gaseous state, this is called vaporisation.

C in which gases get converted into liquid this is called condensation.

D is the process which converts liquid into solid. It is called solidification.

E and F are the processes which convert solid into gas or vice versa is known as sublimation. 

You can opt for Chapter 1 - Matter in Our Surroundings NCERT Solutions for Class 9 Science PDF for Upcoming Exams and also You can Find the Solutions of All the Maths Chapters below.

NCERT Solutions for Class 9 Science

Chapter 1 - Matter in Our Surroundings

Chapter 2 - Is Matter Around us Pure

Chapter 3 - Atoms and Molecules

Chapter 4 - Structure of Atom

Chapter 5 - The Fundamental Unit of Life

Chapter 6 - Tissues

Chapter 7 - Diversity in Living Organisms

Chapter 8 - Motion

Chapter 9 - Force and Laws of Motion

Chapter 10 - Gravitation

Chapter 11 - Work and Energy

Chapter 12 - Sound

Chapter 13 - Why do We Fall ill

Chapter 14 - Natural Resources 

Chapter 15 - Improvement in Food Resources

Important Concepts Covered in Chapter 1 - Matter in Our Surroundings of Class 9 Science NCERT Solutions 

The first chapter delves into the meaning of the matter, its definition, and the various physical states of matter. The matter is defined as everything that takes up space and has mass. For example, water and sugar, sand and sugar, hydrogen and oxygen, and so forth. The matter is made up of minuscule, microscopic particles. Because matter particles have space between them, they are attracted to one another.

Matter in Our Surrounding is the first chapter of Class 9 Science and it covers the following concepts.

Class 9 Science Chapter 1 Matter in Our Surroundings

Even though the topic of Matter in Our Surroundings can be very wide in scope, NCERT solution of Class 9 Science Chapter 1 strictly adheres to the CBSE syllabus. Here are the topics covered –

Matter in Our Surroundings

The introductory chapter elucidates the concept of matter, its definition and the and the physical states in which it exists in nature.

Physical State of Matter 

The three physical states of matter are discussed – solid, liquid and gas. The point is elaborated with instances, one of which exemplifies the property of matter when a diver cuts through water.  

Characteristics of Particles of Matter  

In this chapter, students get to know various characteristics of particles of matter. It discusses that particles of matter – (1) have intermolecular spaces, (2) are in continuous motion and (3) experiences force between one another. 

States of Matter 

Chapter 4 deals with the features of states of matter – compressibility, rigidity, fluidity, kinetic energy, shape and density. 

Can Matter Change its State?

The occurrence of change in state of matter is discussed through the example of ice converting into water and eventually into gaseous form. 

Evaporation 

The concept of evaporation is exemplified through the question as to why a desert cooler functions better on a hot, dry day as opposed to other weather conditions.

Why is it Beneficial for Students to Study from NCERT solutions class 9 Science Matter in Our Surroundings?

Teachers and mentors have always stressed on the importance of self-study in order for a student to succeed. The material that is referred to in the course of self-study also holds a critical value. Here are some of the benefits of studying NCERT solution of Class 9 Science Chapter 1 that would provide students with that much-needed competitive edge – 

The solutions are framed by domain experts possessing much experience. The language of the material has been purposely kept lucid; however, the content remains comprehensive. It enables students to gain in-depth knowledge on the topic 

If there is any concern about the relevance and accuracy of the Class 9 Science Ch 1 NCERT solutions, it can be put to rest. The solution strictly adheres to the CBSE curriculum, without any scope for deviation

It is ensured that the basic concepts are suitably explained so that students remain clear on the topic

Ample problem exercises are provided so that students get sufficient practice 

The NCERT Solutions for Matter in Our Surroundings (Chapter 8) for Class 9 are given in this article.

Conclusion  

This solution contains all of the chapter's questions so that students may prepare for their examinations properly. We have also provided NCERT activities to help pupils grasp the kind or pattern of questions in the CBSE Class 9 test.

While your devotion and constant practice will put you on the right track, NCERT answers will only pave the road. Therefore, get the answer right now and get started on your preparation!

FAQs on NCERT Solutions for Class 9 Science Chapter 1 - Matters In Our Surroundings

1. What are the different characteristics of state of matter explained in NCERT solutions class 9 Science chapter 1?

The different characteristics as elaborated in CBSE Class 9 Science Chapter 1 solutions are based on six parameters - (1) Shape, (2) Volume, (3) Rigidity or Fluidity, (4) Intermolecular force, (5) Intermolecular space, and (6) Compressibility. 

A few of the properties listed in Matter in Our Surroundings Class 9 NCERT answers suggest that solids have a set form, volume, and are rigid, whereas liquids have no fixed shape or volume and are less rigid than solids. Gas, on the other hand, has no definite shape or volume and is not hard.

2. Which are the chapters included in Class 9 Science as per the NCERT Science Book?

There are altogether fifteen chapters included in CBSE class 9 Science – (1) Matter in Our Surroundings, (2) Is Matter Around Us Pure, (3) Atoms and Molecules, (4) Structure of Atom, (5) The Fundamental Unit of Life, (6) Tissues, (7) Diversity in Living Organisms, (8) Motion, (9) Force and Laws of Motion, (10) Gravitation, (11) Work and Energy, (12) Sound, (13) Why do We Fall Ill, (14) Natural Resources, (15) Improvement in Food Resources.

3. Can NCERT Solutions be an effective way to prepare Science Class 9 Chapter 1?

Yes, NCERT Solutions will help the studnets to prepare for chapter 1 of Class 9 pretty well. While there can be a multitude of ways to prepare Ch 1 Class 9 Science, it is only when such preparation is done in a systematic manner, can an optimal output be gained. It is advised that instead of starting with a topic in Class 9 Chapter 1 solution of one’s preference, proceed according to the flow of the chapter.

4. How many questions are present in each exercise of NCERT Solutions for Class 9 Science Chapter 1?

There are five exercises in the NCERT Solutions for Class 9 Science Chapter 1. In Exercise 1, there are four questions. In Exercise 2, there are four questions. Exercise 3 also consists of four questions. In Exercise 4, there are four questions. Lastly, the NCERT exercise has nine questions. All of these questions are provided along with their solutions in the NCERT Solutions for Class 9 Science Chapter 1. 

5. Are the NCERT Solutions for Class 9 Science Chapter 1 sufficient for the exam preparation?

Yes. To do well in the test, students must study and prepare through self-study in addition to what is given in school. Students must use the best study resources provided on Vedantu for self-study. Students should refer to NCERT Answers for Class 9 Science Chapter 1 and others when studying for the Class 9 Science test. They are developed by qualified teachers and are simple to grasp.

6. What is the matter in our surroundings?

Matter in our surroundings is the first topic covered in Chapter 1 of Class 9 Science. In this chapter, students learn what matter is and which entities can not be considered as matter. The five basic elements that constitute matters in our surroundings are fire, earth, sky, water and air. The building blocks of matter are very small particles that can only be seen under a microscope. 

7. Write in short answer format what is matter according to the syllabus of Class 9.

Matter is defined as everything that fills space and has mass. Matter may be perceived by humans through their senses. Water, earth, fire, sky, and air are components that make up matter. It is made up of microscopic particles that can only be seen under a microscope. These are the fundamental building components of matter. Light, heat, electricity, and magnetism are not considered matter since they do not occupy space or have mass.

8. How to download the NCERT Solutions Class 9 Science Chapter 1?

Students can use NCERT Solutions for Class 9 Science Chapter 1 to download the NCERT Solutions Class 9 Science Chapter 1 from Vedantu (vedantu.com). These solutions contain the answers to all the questions from Chapter 1 of the Class 9 Science NCERT textbook in a concise and structured manner. These are available free of cost on Vedantu (vedantu.com). Students can download these using the Vedantu app as well. By going through the solutions, students can learn how to write their answers in the exam. Apart from the solutions, students can also find other study material on Vedantu, including important questions, revision notes and previous year question papers.

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CBSE Class 9 Science Important Case Study Questions with Answers for Term 2 Exam 2022 (PDF)

Check important case study questions of cbse class 9 science to prepare for the cbse term 2 exam 2022. all these questions have been put together by subject experts..

CBSE Class 9 Term 2 Exam 2022:  Important case based questions for CBSE Class 9 Science are provided here students to prepare for the upcoming Term 2 Exam 2022. All the questions provided below are curated by the subject experts. These questions are really helpful to revise important concepts and prepare the case study questions for the exam. Answers to all questions have been provided for reference. So, students should practice the chapter-wise questions to clearly understand the right way to attempt the case based questions. Download the chapter-wise questions in PDF.

Check some of the important case study questions below:

Q. Read the following and answer the questions :

A student was asked by his teacher to verify the law of conservation of mass in the laboratory. He prepared 5% aqueous solutions of NaCl and Na 2 SO 4 . He mixed 10 mL of both these solutions in a conical flask. He weighed the flask on a balance. He then stirred the flask with a rod and weighed it after sometime. There was no change in mass.

• Was the student able to verify the law of conservation of mass?
• If not, what was the mistake committed by him?
• In your opinion, what he should have done?
• What is the molar mass of Na 2 SO 4 ?
• No, he could not verify the law of conservation of mass in-spite of the fact that there was no change in mass.
• No chemical reaction takes place between NaCl and Na 2 SO 4 . This means that no reaction actually took place in the flask.
• He should have performed the experiment by using aqueous solutions of BaCl 2 and Na 2 SO 4 . A chemical reaction takes place in this case and a white precipitate of BaSO 4 is formed.
• Will the weight of the precipitate be the same as that of the reactants before mixing?
• If not, what she should have done?
• Which law of chemical combination does this support?
• State the law of conservation of mass.
• No, it will not be the same.
• She should have weighed the total contents of the beaker after the reaction and not the precipitate alone.
• It supports the law of conservation of mass.
• Mass can neither be created nor destroyed during a chemical reaction.

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Assertion and Reason Questions for Class 9 Science Chapter 1 Matter in Our Surroundings

• Last modified on: 2 months ago
• Reading Time: 8 Minutes

Table of Contents

Here we are providing assertion reason questions for class 9 science. This article covers assertion reason questions based on Class 9 Science Chapter 1 Matter in Our Surroundings . To check the answer, click on ‘ Show Answer ’ given below each question. After clicking it will expand.

Directions:  In each of the following questions, a statement of Assertion is given, and a corresponding statement of Reason is given just below it. Of the statements, given below, mark the correct answer as: (a) Both assertion and reason are true, and reason is the correct explanation of assertion. (b) Both assertion and reason are true, but reason is not the correct explanation of assertion. (c) Assertion is true, but reason is false. (d) Assertion is false, but reason is true.

Q.1. Assertion : A gas can easily be compressed by applying pressure. Reason : Since the inter-particle spaces between gases are very large, they can decrease by applying pressure.

Q.2. Assertion : Gases exert pressure on the walls of the container. Reason : The intermolecular force of attraction is very strong in gases.

Q.3. Assertion : It is easier to cook food at sea level as compared to higher altitudes. Reason : The boiling point of water increases at high altitudes.

Q.4. Assertion : When a solid melts, its temperature remains the same. Reason : The heat gets used up in changing the state by overcoming the forces of attraction between the particles.

Q.5. Assertion : The solids do not diffuse in air. Reason : The particles are loosely packed in solids.

Also read: Case Study Questions for Class 9 Science Chapter 1 Matter in Our Surroundings

Q.6. Assertion : The boiling point of water is 100 C. Reason : The boiling point of water increases at higher altitudes.

Q.7. Assertion : The conversion of a solid directly into a gas is known as sublimation. Reason : Naphthelene does not leave residue when kept open for sometime.

Q.8. Assertion : lce floats on water. Reason : Liquids have lower density than solids.

Q.9. Assertion : Camphor burns with a lot of residue. Reason : Camphor undergoes sublimation.

Q.10. Assertion : The rate of evaporation increases with increase in temperature. Reason: Increase in temperature decreases the kinetic energy of the particles.

Also read: Topicwise Important Questions for Class 9 Science Chapter 1 Matter in Our Surroundings

Q.11. Assertion : Liquids diffuses more easily as compared to gases. Reason : Intermolecular forces are greater in liquids than in gases.

Q.12. Assertion : Steam is better the boiling water for heating purposes. Reason : Steam contains more heat in the form of latent heat than boiling water.

Q.13. Assertion : Gases diffuses more easily as compared to liquids. Reason : Intermolecular forces are greater in solids.

Q.14. Assertion : There is a change in the temperature of the substance when there it undergoes a change in state through it is still being heated. Reason : The heat supplied is either absorbed as a latent heat of fusion or a latent heat of vapourisation.

Q.15. Assertion : When Sugar and Salt are kept in a container, they take the shape of the container. Reason : Sugar is liquid.

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6 thoughts on “ Assertion and Reason Questions for Class 9 Science Chapter 1 Matter in Our Surroundings ”

Very nice questions

Nice questions.It is very helpfull

Nice questions

Wow very dangerous

I got full marks in science exam in school 😂😂😂😂

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CBSE Class 9 Science Sample Papers SA 1

Class 9 is a crucial stage for students as it set up a base for the higher classes. So, it’s important that students should focus on grasping the concepts and try to perform well in all exam, whether it is a class test or summative assessment test. To help them in exam preparation, we have provided the CBSE Class 9 Science Sample Papers for SA 1 exam. Students must solve them after finishing the syllabus of SA 1 test. It will help them in increasing their overall score at the end of the academic session.

Note: This sample paper is based on a previous year pattern. Get the latest paper from  CBSE sample papers for Class 9 Science.

Download CBSE Class 9 Science Sample Papers SA 1

Students will become acquainted with the question paper pattern, marking scheme and difficulty level of the exam by solving the CBSE Class 9 Science Sample Paper SA 1. They will also get to know their strong and weak areas. Working on the weakness will improve their performance in the exam. The CBSE Class 9 Science SA 1 Sample papers are provided below for free downloading in PDF format.

Students can get the sample papers for all the subjects by visiting the CBSE Class 9 Sample paper page at BYJU’S.

How to Solve the CBSE Class 9 Science SA 1 Sample Papers

To gain the maximum benefits of solving the CBSE sample papers , students must follow the points mentioned below.

• Solve the sample paper with seriousness by considering the actual exam scenario.
• Stick to the timing, as mentioned in the sample paper.
• Be honest to yourself. Do not look for the answers while solving the sample papers.
• After solving the sample paper, students must self evaluate their answer sheet.
• Students must note down the points where they have committed the mistake.
• Work on weak areas to improve overall performance.

Students must solve these papers before the exam. It will give them good revision and  help them analyse those areas where they need to put extra effort to improve their performance.

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