JEE PHYSICS MCQ: KINETIC THEORY OF GASES

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An oxygen cylinder of volume

30 {~L}

has an initial gauge pressure of

15 {~atm}

and a temperature of

27^{\circ} {C}

. After some oxygen is withdrawn from the cylinder, the gauge pressure drops to

11 {~atm}

and its temperature drops to

17^{\circ} {C}

. Estimate the mass of oxygen taken out of the cylinder.
(Take,

R=8.31 \,{Jmol}^{-1} {~K}^{-1}

and molecular mass of

\left.{O}_2=32 {u}\right)

View answer and explanation

Correct option: C

0.14 {~kg}

Option C (0.14 kg) is correct because it is the mass of oxygen calculated using the ideal gas law.

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