case study questions class 8

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Cbse, ncert and icse solution online, class 8 science case study question, case study question class 8 science (cbse / ncert board).

Class 8 Science Case Study Question and Answer: CBSE / NCERT Board Class 8 Science Case Study Question prepared by expert Science Teacher. Students can learn Case Based Question / Paragraph Type Question for NCERT Class 8 Science.

There are total 18 chapter Crop Production and Management, Microorganisms: Friend and Foe

, Synthetic Fibres and Plastics, Materials: Metals and Non-Metals, Coal and Petroleum, Combustion and Flame, Conservation of Plants and Animals, Cell – Structure and Functions, Reproduction in Animals, Reaching the Age of Adolescence, Force and Pressure, Friction, Sound, Chemical Effects of Electric Current, Some Natural Phenomena, Light, Stars and the Solar System, Pollution of Air and Water

For any problem during learning any Case or any doubts please comment us. We are always ready to help You.

CBSE Class 8 Science Case Study Question

• Chapter 1 Crop Production and Management Case Study Question
• Chapter 2 Microorganisms: Friend and Foe Case Study Question
• Chapter 3 Synthetic Fibres and Plastics Case Study Question
• Chapter 4 Materials: Metals and Non-Metals Case Study Question
• Chapter 5 Coal and Petroleum Case Study Question
• Chapter 6 Combustion and Flame Case Study Question
• Chapter 7 Conservation of Plants and Animals Case Study Question
• Chapter 8 Cell – Structure and Functions Case Study Question
• Chapter 9 Reproduction in Animals Case Study Question
• Chapter 10 Reaching the Age of Adolescence Case Study Question
• Chapter 11 Force and Pressure Case Study Question
• Chapter 12 Friction Case Study Question
• Chapter 13 Sound Case Study Question
• Chapter 14 Chemical Effects of Electric Current Case Study Question
• Chapter 15 Some Natural Phenomena Case Study Question
• Chapter 16 Light Case Study Question
• Chapter 17 Stars and the Solar System Case Study Question
• Chapter 18 Pollution of Air and Water Case Study Question

What is Case Study Question?

Ans. At case Study there will one paragraph and on the basis of that concept some question will made. Students have to solve that question.

How many marks will have at case based question?

Most of time 5 questions will made from each case. There will 1 or 2 marks for each question.

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• CBSE Study Material
• CBSE Important Questions
• Important Questions For Class 8 Science

CBSE Important Questions for Class 8 Science

CBSE Important Questions for Class 8 Science help students face the exams confidently. As the exam nears, they should complete the syllabus and start with the revision. The CBSE Important Questions for Class 8 Science will help them revise the subject quickly. Here, we have compiled the important questions for all the chapters of the CBSE Class 8 Science subject. By solving them, students will understand the types of questions asked in the exam. All types of questions are provided for students’ practice from basic to high level. CBSE Class 8 Science is a fascinating subject and includes interesting topics, thus providing basic knowledge about light, current, force, human beings, etc. Solving these CBSE Class 8 Science Important Questions is the best way to revise the major concepts of the subject.

The subject experts created the questions based exclusively from the exam perspective. Students must start solving them at least 20 days before the annual exam. By doing so, they will be able to analyse their weak areas and work on them. Practising the CBSE Important Questions will improve their performance and overall score in CBSE Class 8 Science exam.

There is a total of 18 chapters in NCERT Class 8 Science book. In the table below, we have provided the Important Questions for CBSE Class 8 Science for all the chapters. We have also included all types of questions, i.e. very short, short and long answers. These questions will cover all the crucial topics and the CBSE Class 8 Science syllabus.

How to Practise the CBSE Class 8 Science Important Questions

• Practise the question of a particular chapter in one go.
• Refrain from looking for the answer while solving the questions.
• Allocate a time duration for solving the questions and try to finish it accordingly.
• After completing all the questions, do a self-evaluation.
• Go through those questions again that could not be solved.

We, at BYJU’S, also provide other study materials such as CBSE Class 8 Science sample papers , notes, exemplars, solutions, etc.

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• Combustion and Flame Class 8 Case Study Questions Science Chapter 4

Hello students, we are providing case study questions for class 8 science. Case study questions are the new question format that is introduced in CBSE board. The resources for case study questions are very less. So, to help students we have created chapterwise case study questions for class 8 science. In this article, you will find case study questions for cbse class 8 science Chapter 4 Combustion and Flame.

Table of Contents

Case Study Questions on Combustion and Flame

(I) The air that we breathe today is more polluted than it was before. More factories more vehicles greater use of aerosols and sprays, increasing number of refrigerators and air conditioners that release CFC gases, have all contributed toward pollution. When certain chemicals from the smoke and fumes rise up into the air they mix with the water vapour in the clouds and make it acidic. When rain or snow falls from such polluted clouds, it is also acidic in nature. This acidic rain falls on the leaves of trees, on the fertile soil and also runs into lakes and rivers. The effects of the rain are disastrous. Trees slowly lose their leaves and die. Fertile soil turns acidic and damages the plants and crops. The fish and animals living in lakes or seas are killed. Even our drinking water can be affected. Many forests all over the world have suffered severe damage on account of acid rains. Before it is too late, we must try and put a stop to the millions of vehicles and chimneys pouring harmful fumes into the air.

Q.1. Which gas is released by the incomplete combustion of fuels? (a) Oxygen (b) Hydrogen (c) Carbon monoxide (d) None of the above.

Difficulty Level: Easy

Ans. Option (c) is correct. Explanation: Carbon monoxide is a poisonous gas, which is produced by the incomplete combustion of fuels.

Q. 2. Emissions of sulphur dioxide and nitrogen oxide causes: (a) Pollution (b) Acid rain (c) Deforestation (d) None of the above.

Ans. Option (b) is correct. Explanation: Acid rains are caused by emissions of sulphur dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to produce acid. It has a very harmful effect on plants, land and aquatic animals and infrastructure.

Q.3. What is fire triangle?

Difficulty Level: Medium

Ans. For the generation of fire, we need three things to be present simultaneously:-

• Some sort of fuel or combustible material.
• A heat source to raise the temperature of the fuel to its ignition temperature.
• Enough oxygen to sustain combustion. So, if we remove any one of these resources, the fire can be controlled.

Q.4. How carbon dioxide is responsible for global warming?

Ans. Molecules of carbon dioxide gas have a tendency to absorb the heat. The carbon dioxide molecules present in the atmosphere absorb this heat energy and does not allow it to escape into space. So, more the amount of carbon dioxide molecules in the atmosphere more will be the temperature and eventually causes global warming.

• Chemical Effects of Electric Current Class 8 Case Study Questions Science Chapter 11
• Sound Class 8 Case Study Questions Science Chapter 10
• Friction Class 8 Case Study Questions Science Chapter 9
• Force and Pressure Class 8 Case Study Questions Science Chapter 8
• Reaching the Age of Adolescence Class 8 Case Study Questions Science Chapter 7
• Reproduction in Animals Class 8 Case Study Questions Science Chapter 6
• Conservation of Plants and Animals Class 8 Case Study Questions Science Chapter 5
• Coal and Petroleum Class 8 Case Study Questions Science Chapter 3

Microorganisms: Friend and Foe Class 8 Case Study Questions Science Chapter 2

Topics from which case study questions may be asked.

• Learning what is meant by combustion?
• Knowing types of combustion.
• Discuss various methods used to control fire.
• Learning the structure of flame.
• To know more about fuel and fuel efficiency.

We use various kinds of fuel such as petrol, diesel, CNG, LPG, coal, wood etc., in our daily life. Some of these fuels burn with a flame while some do not. This chapter deals with the chemical processes involved in burning and the type of flames produced in the processes. So based on this, the above topic list is provided.

Related Posts

Crop production and management class 8 case study questions science chapter 1.

Case Study Based Questions: Force and Pressure | Science Class 8 PDF Download

Read the given passage below and answer the question:

In a game of volleyball, players often push the moving ball to their team mates to make a winning move. Sometimes the ball is returned to the other side of the court by pushing or smashing it. In cricket, a batsman plays his or her shot by applying a force on the ball with the bat.

Q1: What kind of force is applied by a batsman on a ball while hitting it? (a) Magnetic Force (b) Muscular Force (c) Frictional Force (d) Gravitation Force Ans: (b) Explanation: While hitting a ball, the force is caused by the action of muscles in the batsman’s body. The force resulting due to the action of muscles is known as the muscular force.

Q2: Force can be defined as: (a) Work done (b) Energy required to do work (c) Push or Pull (d) Push only Ans: (c) Sol: A push or a pull on an object is called a force.

Q3: In the given example of a volleyball game, what changes force brought about on the volleyball? (a) Change in direction of motion (b) Change in shape (c) Change in state of motion (d) Both Option (a) and (c) Ans: (d) Sol: When players hit the volleyball, its speed changes and also the direction of its motion changes.

Q4: How do you describe the state of motion? Ans: A change in either the speed of an object, or its direction of motion, or both, is described as a change in its state of motion. The state of rest is considered to be the state of zero speed. An object may be at rest or in motion; both are its states of motion.

Q5: Give two examples showing that force has brought about a change in the shape of an object. Ans: 1. Pressing a ball of dough by a rolling pin to make chapati. 2. Stretching a rubber band.

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Case Study Questions Class 8 Science Reproduction in Animals

Case study questions class 8 science chapter 8 reproduction in animals.

CBSE Class 8 Case Study Questions Science Reproduction in Animals. Important Case Study Questions for Class 8 Board Exam Students. Here we have arranged some Important Case Base Questions for students who are searching for Paragraph Based Questions Reproduction in Animals.

CBSE Case Study Questions Class 8 Science Reproduction in Animals

Case study 1.

  Que. 1) Reproduction is essential for the continuation of a ……………………………………………………………………………………………….. .

(b) Species

(a) Caterpillar

Que. 2) (a) Caterpillar

Que. 3) (d) Cow

Case study 2

Que. 1) Which of the following is NOT a part of the female reproductive system?

(a) in voluntary fertilisation

(b) inter vesicular fistula

Case study 3

Que. 1) The developing zygote called the embryo gets embedded in which part of the female reproductive system?

Que. 4) Define the term “metamorphosis”.

Que. 4) Answer: The transformation of larvae into an adult through drastic changes is called the process of metamorphosis.

Case study 4

Que. 4) Define the process of “asexual reproduction”.

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