Class 11

32. Environmental Chemistry question bank (Chemistry)

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Q1.

The decomposition of organic compounds in the presence of oxygen and without the formation of odoriferous substances is called:

(A)
Decay
(B)
$N_2$ fixation
(C)
Nitrification
(D)
Denitrification
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Q2.

The highest quantity present in the atmosphere is of

(A)
Oxygen
(B)
Hydrogen
(C)
Nitrogen
(D)
Ozone
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