NBSE Class 8 Question Paper 2019 Science
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About NBSE Class 8 Question Paper 2019 Science
NBSE Class 8 Question Paper 2019 Science is available here for free download. Published by Nagaland Board for Class 8, this question paper can be viewed online or downloaded as a PDF (3 pages). Candidates preparing for Class 8 can use NBSE Class 8 Question Paper 2019 Science to understand the exam pattern, the type of questions asked, and the overall difficulty level.
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NBSE Class 8 Question Paper 2019 Science – Text
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📄 View text version (3 pages)
Page 1
Total number of printed pages: 3 NB-E/SC/1
2019
CLASS - VIII
SCIENCE
Total marks : 80 Time : 3 hours
General instructions:
i) Approximately 20 minutes is allotted to read the question paper and revise the answers.
ii) The question paper consists of six(6) categories of questions.
iii) All questions are compulsory.
iv) Internal choice has been provided in some questions.
v) Marks allocated to every question are indicated against it.
N.B: Check that all pages of the question paper is complete as indicated on the top left side.
A. Choose the most appropriate answer from the given alternatives:
1. Which of the following is a Kharif crop? 1
(i) Pea (ii) Gram
(iii) Paddy (iv) Mustard
2. Thermosetting plastic is 1
(i) polysterene (ii) bakelite
(iii) polythene (iv) polyvinyl chloride
3. Which of the following has the highest calorific value? 1
(i) Hydrogen (ii) Petrol
(iii) Kerosene (iv) Coal
4. The species which face high risk of extinction is 1
(i) Tiger (ii) Monkey
(iii) Dodo (iv) Squirrel
5. A tadpole develops into an adult frog by 1
(i) fertilization (ii) budding
(iii) embedding (iv) metamorphosis
6. The tendency of a liquid to resist its flow is 1
(i) viscosity (ii) surface tension
(iii) density (iv) drag
7. Which of the following is a good conductor of electricity? 1
(i) Salt water (ii) Distilled water
(iii) Pure water (iv) Oil
8. The right thing to do during lightning is to 1
(i) stand under a tall tree (ii) touch metallic objects
(iii) use umbrella (iv) keep sitting inside a vehicle
9. The least sensitive part of the retina is 1
(i) yellow spot (ii) blind spot
(iii) black spot (iv) dark spot
2019
CLASS - VIII
SCIENCE
Total marks : 80 Time : 3 hours
General instructions:
i) Approximately 20 minutes is allotted to read the question paper and revise the answers.
ii) The question paper consists of six(6) categories of questions.
iii) All questions are compulsory.
iv) Internal choice has been provided in some questions.
v) Marks allocated to every question are indicated against it.
N.B: Check that all pages of the question paper is complete as indicated on the top left side.
A. Choose the most appropriate answer from the given alternatives:
1. Which of the following is a Kharif crop? 1
(i) Pea (ii) Gram
(iii) Paddy (iv) Mustard
2. Thermosetting plastic is 1
(i) polysterene (ii) bakelite
(iii) polythene (iv) polyvinyl chloride
3. Which of the following has the highest calorific value? 1
(i) Hydrogen (ii) Petrol
(iii) Kerosene (iv) Coal
4. The species which face high risk of extinction is 1
(i) Tiger (ii) Monkey
(iii) Dodo (iv) Squirrel
5. A tadpole develops into an adult frog by 1
(i) fertilization (ii) budding
(iii) embedding (iv) metamorphosis
6. The tendency of a liquid to resist its flow is 1
(i) viscosity (ii) surface tension
(iii) density (iv) drag
7. Which of the following is a good conductor of electricity? 1
(i) Salt water (ii) Distilled water
(iii) Pure water (iv) Oil
8. The right thing to do during lightning is to 1
(i) stand under a tall tree (ii) touch metallic objects
(iii) use umbrella (iv) keep sitting inside a vehicle
9. The least sensitive part of the retina is 1
(i) yellow spot (ii) blind spot
(iii) black spot (iv) dark spot
Page 2
-2- NB-E/SC/1
10. The branch of science that deals with the study of stars and other celestial
objects is called 1
(i) Biology (ii) Astronomy
(iii) Geography (iv) Ecology
B. Fill in the blanks:
1. Bacillus form of bacteria has shape. 1
2. The metal which is in liquid state at room temperature is . 1
3. The word ‘cell’ was coined by . 1
4. Due to the sole of a shoe wears out. 1
5. The rainbow is formed by the of sunlight. 1
C. Answer the following questions in one word or one sentence:
1. Name one disease caused by virus. 1
2. Give one use of petrol. 1
3. What is ignition temperature? 1
4. Why is reproduction important? 1
5. What is electrolysis of water? 1
D. Answer the following questions in about 10-20 words:
6. List any four methods of preserving food. 4×½=2
7. Draw a labelled diagram of a candle flame showing the different zones of flame. 2
8. Define adolescence. What is the age period of adolescence in a child? 1+1=2
9. Why is it easier to cook food in a pressure cooker? 2
10. State two methods to reduce friction. 2×1=2
11. Differentiate between musical sound and noise. 1+1=2
12. Write any two actions to be taken during earthquakes. 2×1=2
13. State the two laws of reflection of light. 2×1=2
14. Give two applications of artificial satellites. 2×1=2
15. What is greenhouse effect? 2
10. The branch of science that deals with the study of stars and other celestial
objects is called 1
(i) Biology (ii) Astronomy
(iii) Geography (iv) Ecology
B. Fill in the blanks:
1. Bacillus form of bacteria has shape. 1
2. The metal which is in liquid state at room temperature is . 1
3. The word ‘cell’ was coined by . 1
4. Due to the sole of a shoe wears out. 1
5. The rainbow is formed by the of sunlight. 1
C. Answer the following questions in one word or one sentence:
1. Name one disease caused by virus. 1
2. Give one use of petrol. 1
3. What is ignition temperature? 1
4. Why is reproduction important? 1
5. What is electrolysis of water? 1
D. Answer the following questions in about 10-20 words:
6. List any four methods of preserving food. 4×½=2
7. Draw a labelled diagram of a candle flame showing the different zones of flame. 2
8. Define adolescence. What is the age period of adolescence in a child? 1+1=2
9. Why is it easier to cook food in a pressure cooker? 2
10. State two methods to reduce friction. 2×1=2
11. Differentiate between musical sound and noise. 1+1=2
12. Write any two actions to be taken during earthquakes. 2×1=2
13. State the two laws of reflection of light. 2×1=2
14. Give two applications of artificial satellites. 2×1=2
15. What is greenhouse effect? 2
Page 3
-3- NB-E/SC/1
E. Answer the following questions in about 30-40 words:
16. Write three factors which are to be taken care of while sowing seeds. 3×1=3
17. a. Explain the process of refining of petroleum.
Or 3
b. Explain the process of formation of coal.
18. Write one function for each of the following:
(i) Cell wall (ii) Mitochondria (iii) Nucleus 3×1=3
19. a. Draw the life cycle of a mosquito and label the stages.
Or 3
b. Draw the life cycle of a butterfly and label the stages.
20. Differentiate between internal and external fertilization. 1½+1½=3
21. What are the various effects of force? Give three points. 3×1=3
22. What is electroplating? Write two advantages of it. 1+2=3
23. a. Write any three harmful effects of polluted air.
Or 3×1=3
b. Write any three harmful effects of polluted water.
F. Answer the following questions in about 50-60 words:
24. What are plastics? Give reasons why:
(i) Electric wires have a plastic covering.
(ii) Cooking utensils have plastic handles. 1+1½+1½=4
25. a. Define corrosion. Write any three methods of prevention of corrosion.
Or 1+3=4
b. What are noble metals? Give any three uses of noble metals.
26. What is biodiversity? Write any three reasons for biodiversity loss. 1+3=4
27. a. Write any two health hazards caused due to noise. How can we control noise? Write
any two points. 2+2=4
Or
b. Name the three main parts of the human ear and explain their role in hearing.
(1½+2½=4)
***************************************
E. Answer the following questions in about 30-40 words:
16. Write three factors which are to be taken care of while sowing seeds. 3×1=3
17. a. Explain the process of refining of petroleum.
Or 3
b. Explain the process of formation of coal.
18. Write one function for each of the following:
(i) Cell wall (ii) Mitochondria (iii) Nucleus 3×1=3
19. a. Draw the life cycle of a mosquito and label the stages.
Or 3
b. Draw the life cycle of a butterfly and label the stages.
20. Differentiate between internal and external fertilization. 1½+1½=3
21. What are the various effects of force? Give three points. 3×1=3
22. What is electroplating? Write two advantages of it. 1+2=3
23. a. Write any three harmful effects of polluted air.
Or 3×1=3
b. Write any three harmful effects of polluted water.
F. Answer the following questions in about 50-60 words:
24. What are plastics? Give reasons why:
(i) Electric wires have a plastic covering.
(ii) Cooking utensils have plastic handles. 1+1½+1½=4
25. a. Define corrosion. Write any three methods of prevention of corrosion.
Or 1+3=4
b. What are noble metals? Give any three uses of noble metals.
26. What is biodiversity? Write any three reasons for biodiversity loss. 1+3=4
27. a. Write any two health hazards caused due to noise. How can we control noise? Write
any two points. 2+2=4
Or
b. Name the three main parts of the human ear and explain their role in hearing.
(1½+2½=4)
***************************************