The highest quantity present in the atmosphere is of [NCERT 1971, 79;

1.	The highest quantity present in the atmosphere is of [NCERT 1971, 79; CPMT 1972]
A.	Oxygen
B.	Hydrogen
C.	Nitrogen
D.	Ozone
Answer» D. Ozone

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The highest quantity present in the atmosphere is of [NCERT 1971, 79; CPMT 1972]

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