CBSE Class 8 Science Previous Year Question Paper
This CBSE Class 8 Science Previous Year Question Paper is a valuable resource for students preparing for their board examinations. The paper consists of 36 questions, carrying a total of 90 marks and is designed to be completed within a 3-hour timeframe. It includes questions based on practical skills from Q25 to Q36. All questions are compulsory, with marks indicated against each. The paper covers a range of topics, including environmental science, chemistry, physics, and biology, with questions requiring definitions, differentiations, diagrams, explanations, and problem-solving. Solving this previous year's paper helps students understand the exam pattern, identify important topics, and improve their time management and accuracy, ultimately boosting their confidence and performance in the final exams.
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Quick info
| Board | CBSE |
|---|---|
| Class | 8 |
| Subject | Science |
| Language | English |
| Type | Previous Year Question Paper |
| Exam type | Board Exam |
Paper pattern
This paper contains 36 questions and is to be completed in 3 hours, with a total of 90 marks. Questions 25 to 36 are based on practical skills.
Topics covered
Paper topics
- Polluting gases
- Animal sanctuaries
- Ignition temperature
- Conductors and insulators
- Metals and non-metals
- Kharif crops
- Animal migration
- Candle flame zones
- Electric current effects
- Tester design
- Copper sulphate reaction
- Sulphur burning gas
- Agricultural practices
- Deforestation effects
- Lightning conductors
- Thunderstorms
- Electric safety
- Red data book
- Carnivores
- National parks
- Nitrogen cycle
- Food preservatives
- Communicable diseases
- Antibiotics vs. Vaccines
- Defects of vision
- Ray diagrams
- Phenomenon of light
- Prism
- Sunlight dispersion
Important topics
- Candle flame zones
- Effects of electric current
- Copper sulphate reaction
- Sulphur burning gas
- Deforestation effects
- Nitrogen cycle
- Defects of vision
- Phenomenon of light
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Question paper text
Date:
Class: VIII
Science
Time:3 hrs M. M: 90
General Instructions:
- There are 36 questions in this paper.
- Marks are indicated against each question.
- Q25 to Q36 are based on practical skills.
- All questions are compulsory
1 Name the polluting gas which reduces the oxygen carrying capacity of blood. 2 Differentiate between a zoo and a wildlife sanctuary. 3 Define ignition temperature.
4 Complete the following table 2
Material Conduction of Conductor/Insulator Ductile and Malleable or not
heat of electricity Metals Conduct Ductile and Malleable
Non metals
5 What are Kharif crops? Give two examples 2
6 Why do animals migrate from one place to another? Give two examples. 2
7 a) Draw the diagram of a candle flame and label the different zones. 3
b)Distinguish between outermost and middle zone of a candle flame on the basis of
- Type of combustion (ii) Temperature. 3
8 A tester was designed as shown below
- Name the two effects of electric current that are depicted in this tester.
- Which device can be used instead of the compass needle in the tester?
- When distilled water was used in the beaker, there was no deflection in the compass needle but when a pinch of salt is added to this water, deflection was observed. Why?
9
- Name and define type of reaction is shown in the figure given below.
3 Copper sulphate
- What will be the change in the colour of solution in the beaker?
- Give the chemical equation of the reaction involved.
10 Radhika collected the gas evolved from burning sulphur powder in a test tube 3
- Identify the gas evolved in the test tube
- How can it be tested whether it is acidic or basic?
- Write the chemical equations for all the reactions taking place in this process.
11 List the seven agricultural practices followed by farmers. 3
12 Discuss the effects of deforestation on the following 3
a)Soil b)Wild life c) our future generations. 13 Give reason: 3
- Spikes are installed on the rooftop of high rise buildings.
- It is safe to remain inside the car during thunderstorms.
- We should stand on rubber mat or wear rubber slippers while operating electric appliances.
14 a) What is Red data book? 3
- What will happen if all carnivores in the forest are killed?
- Name a national park in India known for conservation of tigers.
15 Draw the nitrogen cycle occurring in nature. 3
16 a) Give examples of the following: 3
- Two commonly used food preservatives.
- Any two communicable diseases caused by viruses.
- Give one difference between an antibiotic and a vaccine.
17 A person has difficulty in reading the newspaper. What could be the defect of vision he is 3
suffering from? How can this defect be corrected. Draw ray diagram of the corrected eye. 18 Study the figure given below and answer the questions that follow 3
Sunlight
Prism
- Which phenomenon is shown in the figure?
Frequently asked questions
What is this document?
This is a CBSE Class 8 Science Previous Year Question Paper designed for board exam practice.
What is the duration and marking scheme?
The paper is for 3 hours and carries a total of 90 marks.
How many questions are there in the paper?
There are 36 questions in total, with questions 25 to 36 focusing on practical skills.
Why is solving previous year papers important?
Solving previous year question papers helps students understand the exam pattern, identify important topics, and improve their performance.
What topics are covered in this paper?
The paper covers a wide range of Science topics including environmental issues, basic chemistry, physics concepts like electricity and light, and biology.
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