Statement (A): S.T.P means standard temperature and pressure
Statement (B): At STP one mole of any gas occupies 22.4 lit of volume.
Statement (C): At S.T.P, one mole of any gas occupies 22.4 litres of volume. This is called Gram molar volume.

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All the above statements are correct

All the above statements are incorrect

A and B are correct but C is incorrect

A and B are incorrect but C is correct

answer is A.

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Detailed Solution

At STP, one mole of any gas occupies 22.4 litres of volume. This is called Gram molar volume (GMV). STP means Standard Temperature and Pressure.

STP is a short hand way of representing the standard temperature i.e., $0 ° C$ or 273 K and a standard pressure of 1 atm.

$1 a t m = 76 c m$ of Hg or 760 mm of Hg

This rule is most commonly used while studying the gas laws.

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