| 11. |
Fluoride pollution mainly affects___________
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Answer:
Option (d) |
| 12. |
Which of the following is a biodegradable substance
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Answer:
Option (d) |
| 13. |
Minamata disease is caused by severe _____________ poisoning.
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|
Answer:
Option (a) |
| 14. |
In the atmosphere the layer above the troposphere is ________
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|
Answer:
Option (a) |
| 15. |
Stratosphere contains an important species which protects life on earth is
|
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|
Answer:
Option (b) |
| 16. |
Eutrophication is
|
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|
Answer:
Option (b) |
| 17. |
Acid rain contains
|
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|
Answer:
Option (a) |
| 18. |
A set of organisms of the same species occupying a particular space is known as
|
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|
Answer:
Option (b) |
| 19. |
Bhopal Gas Tragedy was due to leakage of
|
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|
Answer:
Option (a) |
| 20. |
The Water (Prevention and Control of Pollution),Act was enacted in
|
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|
Answer:
Option (a) |