JEE PHYSICS MCQ: KINETIC THEORY OF GASES

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Oxygen is filled in a closed metal jar of volume

1.0 \times 10^{-3} \mathrm{~m}^3

at a pressure of

1.5 \times 10^5 \mathrm{~Pa}

and temperature

400 \mathrm{~K}

. The jar has a small leak in it. The atmospheric pressure is

1.0 \times 10^5 \mathrm{~Pa}

and the atmospheric temperature is

300 \mathrm{~K}

. Find the mass of the gas that leaks out by the time the pressure and the temperature inside the jar equalise with the surrounding.

View answer and explanation

Correct option: C

0.16 g

Option C (0.16 g) is correct because the mass of gas leaked out is calculated by finding the difference in mass before and after the pressure and temperature equalize.

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