Kinetic Theory of Gases PYQs Set 8 (PDF)

Set 8 of 8 · Questions 211-212 of 212

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Mere Teacher · Previous Year Questions NEET Physics · Kinetic Theory of Gases · Set 8 (Q211-212)
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211. $The relation between root mean square speed (v_{r m s}) and most probable speed (v_{p}) for the molar mass M of oxygen gas molecule at the temperature of 300 K will be :-$ (1) $V_{r m s} = \frac{2}{3} v_{p}$ (2) $V_{r m s} = \frac{3}{2} v_{p}$ (3) $V_{r m s} = v_{p}$ (4) $V_{r m s} = \frac{1}{3} v_{p}$ 212. $According to kinetic theory of gases, A. The motion of the gas molecules freezes at 0°C B. The mean free path of gas molecules decreases if the density of molecules is increased. C. The mean free path of gas molecules increases if temperature is increased keeping pressure constant. D. Average kinetic energy per molecule per degree of freedom is \frac{3}{2} k_{B} T (for monoatomic gases) Choose the most appropriate answer from the options given below:$ (1) $A and C only$ (2) $B and C only$ (3) $A and B only$ (4) $C and D only$