At constant temperature , volume of a given mass of gas increases by 20% , then the pressure of the gas

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Decreases by 20 %

Decreases by 16.67 %

Decreases by 25 %

Decreases by 21 %

answer is B.

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Detailed Solution

T is constant P1V1 =P2V2 100×100 =P2 ×120 P2 =83.33

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