Consider the following: 1. Carbon monoxide 2. Nitrogen oxide 3. Ozone 4. Sulphur dioxide Excess of which of the above in the environment is/are cause(s) of acid rain? |ForumIAS

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Q. Consider the following:
1. Carbon monoxide
2. Nitrogen oxide
3. Ozone
4. Sulphur dioxide
Excess of which of the above in the environment is/are cause(s) of acid rain?

[A] 1, 2 and 3

[B] 2 and 4 only

[C] 4 only

[D] 1, 3 and 4

Answer: B

Notes: