Consider the following:
Carbon monoxide
Nitrogen oxide
Ozone
Sulphur dioxide
Excess of which of the given 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
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UPSC 2022 - Question 100
UPSC 2022 - Question 100
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