21. |
Below which of the following pH is rain regarded as ‘acid rain’?
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Answer:
Option (c) |
22. |
Glass containers are generally not preferred for sampling rain water. Why?
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Answer:
Option (c) |
23. |
Which of the following gases are main contributors to acid rain?
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Answer:
Option (d) |
24. |
What does the term “liming” mean?
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Answer:
Option (a) |
25. |
Who discovered the phenomenon of acid rain?
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Answer:
Option (c) |
26. |
Which of the following is/are natural contributor(s) to sulphur dioxide in the atmosphere?
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Answer:
Option (d) |
27. |
The process of burning of municipal solid waste at high temperature is called ____________
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Answer:
Option (a) |
28. |
Which of the following is a biodegradable waste?
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Answer:
Option (c) |
29. |
In which method of disposal of municipal solid waste, the waste is dumped in the soil?
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Answer:
Option (c) |
30. |
Which of the following is correct regarding disposal of waste by land filling?
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Answer:
Option (c) |