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Standard XII
Biology
Question
Among the following, the only secondary pollutant is:
S
O
2
C
O
O
3
N
O
A
S
O
2
B
O
3
C
N
O
D
C
O
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Solution
Verified by Toppr
The correct option is
C
O
3
Secondary pollutants are the compounds which combine with primary pollutants through chemical or photochemical reactions.
Here Ozone is secondary pollutant.
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