The second most abundant constituent of air is

Oxygen

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Nitrogen

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Water vapour

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Impurities

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Solution

The correct option is A
Oxygen

The most abundant constituents of air is Oxygen. The constituents of air are:

$\begin{matrix} P u r e G a s N a m e & S y m b o l & M o l e F r a c t i o n N i t r o g e n & N_{2} & 0.78084 O x y g e n & O_{2} & 0.209476 A r g o n & A r & 0.00934 C a r b o n d i o x i d e & C O_{2} & 0.000314 \end{matrix}$

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Similar questions

Q2. (a) What are the different constituents of air?

(b) Which is the most abundant gas present in the air? Give the relative abundance of the oxygen gas present in the air.

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