2022 Environment - Pollution

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?

  • 1, 2 and 3
  • 2 and 4 only
  • 4 only
  • 1, 3 and 4

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    2022 UPSC Environment PYQ | UPSC Insights | UPSC Insights