Environmental Engineering in CE
Lung cancer & DNA breakage are the major ill effects of excessive ozone exposure to human beings. Ozone layer depletion in the atmosphere is mainly caused by the presence of

Hydrocarbons
CO₂
CFC (chloro fluoro carbon)
SO₂

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Environmental Engineering in CE
Automobile exhaust is passed through two compartments catalytic converter employing platinum as catalyst for

All of these
Conversion of CO into CO₂ in the second compartment
Conversion of NOx into N₂ and NH₃ in the first compartment
Oxidation of unburnt hydrocarbon fuel in the second compartment

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