Q.

Look at the following gases

1) Carbon dioxide      2) Helium      3) Nitrogen     4) Oxygen

The two most abundant gases in the atmosphere are :

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a

1 and 3

b

2 and 4

c

1 and 4

d

3 and 4

answer is C.

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Detailed Solution

Nitrogen, Oxygen are most abundant gases in the atmosphere.
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