Photochemical smog is characterized by the absence of
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Answer:
CO₂
Explanation:
Photo chemical smog does't contain CO₂
Photo chemical smog is an air pollution that is formed by combining the smoke and fog in the environment and reacts with the sunlight and thus form Peroxy acetyl nitrate(PAN),Volatile compounds,Nitrogen oxides and other harmful pollutants.
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Explanation:
Two pipes A and B can fill a petrol tanker in 15 and 12 hours respectively. A
third pipe C can empty the whole tanker in 6 hours. If the tanker is full and all
three pipes are opened together, how long would they take to empty it?
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