Consider a mixture of oxygen and hydrogen kept at room temperatur… - Vidyadip

MCQ

Consider a mixture of oxygen and hydrogen kept at room temperature. $AB$ compared to a hydrogen molecule an oxygen molecule hits the wall:

A
With greater average speed.
✓
With smaller average speed.
C
With greater average kinetic energy.
D
With smaller average kinetic energy.

✓

Answer

Correct option: B.

With smaller average speed.

The average speed of molecules is given by $\sqrt{\frac{8\text{kT}}{\pi\text{m}}}.$
We observe that greater the mass, lesser is the average speed of the molecule. Since an oxygen molecule is heavier than a hydrogen molecule, the oxygen molecule will hit the wall with smaller average speed.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from Kinetic Theory→Kinetic Theory — all question types→Physics STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Mean free path of a gas molecule is:

Which of the following has largest moment of inertia?

In which of the following transitions will the wavelength be minimum?

According to the experiment of Ingen Hausz the relation between the thermal conductivity of a metal rod is $ K$ and the length of the rod whenever the wax melts is

A particle is projected from horizontal making an angle of $53^{\circ}$ with initial velocity $100\,m / s$. The time taken by the particle to make angle $45^{\circ}$ from horizontal is $.........\,s$

A body is executing simple harmonic motion with frequency $'n',$ the frequency of its potential energy is :

In problem $7.5,$ the $CM$ of the plate is now in the following quadrant of $x - y$ plane:

In a process, temperature and volume of one mole of an ideal monoatomic gas are varied according to the relation $VT = K$, where $I$ is a constant. In this process the temperature of the gas is increased by $\Delta T$. The amount of heat absorbed by gas is ($R$ is gas constant)

If the screw on a screw-gauge is given six rotations, it moves by $3\; \mathrm{mm}$ on the main scale. If there are $50$ divisions on the circular scale the least count of the screw gauge is

Coefficient of volumetric expansion $\alpha_\text{v}$ is not a constant. It depends on temperature. Variation of $\alpha_\text{v}$ with temperature for metals is: