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Air pollution: gaseous pollutants, acid rain, smog
JEE Main level
Single correct option
Difficulty 2 of 3
ev013
In photochemical smog, ozone formed in the troposphere reacts with nitric oxide. The products are
A
NO
X
3
and
O
B
NO
X
2
and
O
X
2
C
N
X
2
and
O
X
3
D
N
X
2
O
and
O
X
2
Answer: B
The reaction is
O
X
3
+
NO
NO
X
2
+
O
X
2
(N: +2 to +4, O3 is reduced to O2). Check balance: 1 N and 4 O on each side.
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