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Question 1 of 19
1. Question
What do plant and animal matter produce on burning ?
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Question 2 of 19
2. Question
What do plant animal matter consume on burning ?
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Question 3 of 19
3. Question
contains few gases and fire dust particle.
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Question 4 of 19
4. Question
Mountaineers carry cylinders with them.
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Question 5 of 19
5. Question
The properties of air are:
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Question 6 of 19
6. Question
When the bottle was tilted, the air was able to come out in the form of.
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Question 7 of 19
7. Question
What is the percentage of nitrogen and oxygen in air ?
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Question 8 of 19
8. Question
What is percentage of carbon dioxide and few other gases, water vapour, dust particles ?
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Question 9 of 19
9. Question
Which component of air is used by green plants to make their food ?
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Question 10 of 19
10. Question
Which gas in the atmosphere is essential for respiration ?
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Question 11 of 19
11. Question
The envelope of air that surrounds the earth is known as:
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Question 12 of 19
12. Question
Air in motion is called:
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Question 13 of 19
13. Question
Nitrogen, oxygen, carbon dioxide, water vapour and a few gases are:
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Question 14 of 19
14. Question
What makes a firki rotate ?
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Question 15 of 19
15. Question
During storms the wind blows at a very.
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Question 16 of 19
16. Question
Burning occurs in the presence of which gas ?
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Question 17 of 19
17. Question
Why do plants and animals consume oxygen ?
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Question 18 of 19
18. Question
The burning of fuel also produces
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Question 19 of 19
19. Question
Why do we feel suffocation if some material is burning in a closed room ?
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