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- Reducing smog is a mixture of : Option: 1 Smoke, fog and Option: 2 Smoke, fog and Option: 3
Reducing smog is a mixture of :
Option: 1 Smoke, fog and 
Option: 2 Smoke, fog and 
Option: 3 Smoke, fog and 
Option: 4 Smoke, fog and 
Answers (1)
Reducing or classical smog is the combination of smoke, fog, and SO2 .
Therefore, the Correct option is (4).
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