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Air Is Life

Which of the ...

Question

Which of the following gases is/are heavier than dry air?

A

Moist air

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B

Oxygen

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C

Moist nitrogen

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D

Hydrogen sulphide

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Solution

The correct options are
C Oxygen
D Hydrogen sulphide
As we know,
Avg, molar mass of dry air is $29.$
So oxygen $(32)$ & $H_{2} S (34)$ are heavier than dry air.

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