CBSE Class 8 Science Previous Year Question Paper
This CBSE Class 8 Science Previous Year Question Paper provides an excellent opportunity for students to prepare for their board examinations. The paper consists of 36 questions covering a wide range of topics in science, with marks indicated against each question. It includes sections on fundamental scientific concepts, practical skills, and biological processes. Questions range from identifying forces and explaining friction to understanding cell structure, reproduction, and human health. The paper also delves into topics like petroleum formation, plastic usage, and reproductive systems. Solving this board question paper helps students familiarize themselves with the exam pattern, question types, and marking scheme, ultimately boosting their confidence and performance.
Quick info
| Board | CBSE |
|---|---|
| Class | 8 |
| Subject | Science |
| Language | English |
| Type | Previous Year Question Paper |
| Exam type | Board Exam |
Paper pattern
The paper contains 36 questions, with marks indicated for each. Questions 24 to 36 are based on practical skills.
Topics covered
Paper topics
- Audible range
- Fertilization
- Carbonisation
- Petroleum
- Friction
- Eukaryotic and Prokaryotic cells
- Chloroplast
- Multicellular and Unicellular organisms
- Animal cell structure
- Amoeba reproduction
- Adolescent health
- Sound production
- Destructive distillation of coal
- Thermoplastics and Thermosetting plastics
- Plastic minimization
- Petroleum formation and refining
- Female reproductive system
- Chromosomal sex determination
- Endocrine glands and hormones
Important topics
- Friction
- Cell Biology
- Reproduction
- Petroleum and Plastics
- Hormones
PDF preview
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Question paper text
Date: Class: VIII
SCIENCE
Time:3h M. M: 90
General Instructions:
- There are 36 questions in this paper.
- Marks are indicated against each question.
- Q 24 to Q 36 are based on practical skills.
- All questions are compulsory.
1 What is the audible range for human ears? 2 (i) Where does fertilization of egg take place in humans?
- Give another term used for fertilized egg?
3 List the two factors which determine the height of an individual. 1
4 Identify the agent exerting force and the object on which it acts. State the effect of force also. 2
Drawing water from a well. 5 Explain the cause of friction with the help of a diagram. 2
6 (i) What is carbonisation? 2
- Why is petroleum called 'black gold'?
7 Name and define the force depicted in the following: 3
- (ii) A one rupee coin attracted towards a magnet.
8 (i) The direction of applied force is shown in the following situations. What will be the 3
direction of friction in each case. (a) (b)
- Suggest two ways to reduce the frictional force in the above cases.
9 Explain with the help of three examples each that friction is a necessary evil. 3
10 (i) What is the difference between a eukaryotic cell and a prokaryotic cell? Give one example <math>2+1</math>
each.
- What is the role of chloroplast in green plants??
11 (i) Multicellular organisms are complex and evolved while unicellular organisms are simple <math>2+1</math>
in organization. Give reasons (ii)Classify the following as unicellular and multicellular organisms/structure:
Hydra, Yeast, A hen's egg, Paramecium
VIII Page 1 of 3
3 12 Label the following diagram of an animal cell and mention the role of cell organelle 'E'. В 13 How does amoeba reproduce? Explain with the help of diagrams. 3
14 Explain the three basic requirements for keeping good health during adolescence. 1+2
15 Explain how sound is produced in humans. Also state how does the quality of sound change? 3
16 What is meant by destructive distillation of coal? What are the products obtained from it? 3
Which of these products is used in extraction of metals? 17 (i) Differentiate between thermoplastics and thermosetting plastics. Give one example of 2+1
each.
- What is the full form of PET?
18 Explain with the help of examples, three ways to minimize the use of plastics in our daily 3
lives., 19 (i) Explain the formation of petroleum 5
- What is petroleum refining?
- Complete the table
S.No Constituent of Any one of its use Petroleum Fuel for heavy motor vehicles.
- Paraffin wax 3 Bitumen 4 Solvent for dry cleaning
20 (i)Draw a well labeled diagram of the female reproductive system. 3
- Name the female sex hormone. Where is it produced and what is its function? 2
21 (i) Explain the chromosomal sex determination in humans with the help of a flow chart. 5
- Complete the table
S.No Endocrine Hormone secreted Main function
Glands 1 Adrenaline 2 Pancreas
VIII Page 2 of 3
Frequently asked questions
What is this document?
This is a CBSE Class 8 Science Previous Year Question Paper, also known as a board question paper, for exam practice.
What is the total duration and marks for this paper?
The total duration for this paper is 3 hours and the maximum marks are 90.
How many questions are there in this paper?
There are a total of 36 questions in this paper.
What types of questions are included?
The paper includes a variety of questions, with questions 24 to 36 specifically based on practical skills.
How does solving previous year papers help students?
Solving previous year question papers helps students understand the board pattern, identify important topics, and improve their marks and confidence for the final examination.
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