Kinetic Theory of Gases MCQs for NEET — Physics Questions with Answers

The respective speeds of the molecules are 1, 2, 3, 4 and 5 km/sec. The ratio of their r.m.s. velocity and the average velocity will be

According to the kinetic theory of gases the r.m.s. velocity of gas molecules is directly proportional to

At a given temperature the root mean square velocities of oxygen and hydrogen molecules are in the ratio

The temperature of an ideal gas is increased from 120 K to 480 K. If at 120 K, the root mean square velocity of the gas molecules is v, at 480 K it becomes

By what factor the r.m.s. velocity will change, if the temperature is raised from 27°C to 327°C

At a given temperature if ${\mathrm{V}}_{\mathrm{rms}}$ is the root mean square velocity of the molecules of a gas and ${\mathrm{V}}_{\mathrm{s}}$ the velocity of sound in it, then these are related as $\left(\mathrm{\gamma }=\frac{{\mathrm{C}}_{\mathrm{P}}}{{\mathrm{C}}_{\mathrm{v}}}\right)$

Let A and B the two gases and given : $\frac{{\mathrm{T}}_{\mathrm{A}}}{{\mathrm{M}}_{\mathrm{A}}}=4.\frac{{\mathrm{T}}_{\mathrm{B}}}{{\mathrm{M}}_{\mathrm{B}}} ;$ where T is the temperature and M is molecular mass. If ${\mathrm{C}}_{\mathrm{A}}$ and ${\mathrm{C}}_{\mathrm{B}}$ are the r.m.s. speed, then the ratio $\frac{{\mathrm{C}}_{\mathrm{A}}}{{\mathrm{C}}_{\mathrm{B}}}$ will be equal to

For a gas at a temperature the root-mean-square velocity ${\mathrm{v}}_{\mathrm{rms}}$ , the most probable speed ${\mathrm{v}}_{\mathrm{mp}}$ , and the average speed ${\mathrm{v}}_{\mathrm{av}}$ obey the relationship

If ${\mathrm{V}}_{\mathrm{H}}, {\mathrm{V}}_{\mathrm{N}}$ and ${\mathrm{V}}_{\mathrm{O}}$ denote the root-mean square velocities of molecules of hydrogen, nitrogen and oxygen respectively at a given temperature, then

The r.m.s. speed of a group of 7 gas molecules having speeds $\left(6, 4, 2, 0, -2, -4, -6\right) \mathrm{m}/\mathrm{s}$ is