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Question 1

If ν, ν_rms and ν_p represent the mean speed, root mean square and most probable speed of the molecules in an ideal monoatomic gas at temperature T and if m is mass of the molecule, then

Question 2

One kg of a diatomic gas is at a pressure of 8 × 10⁴ N/m². The density of the gas is 4 kg/m³. What is the energy of the gas due to its thermal motion?

Question 3

Supposing the distance between the atoms of a diatomic gas to be constant, its specific heat at constant volume per mole (gram mole) is

Question 4

The ratio of specific heat of a gas is 9/7, then the number of degrees of freedom of the gas molecules for translational motion is :

Question 5

At 0 °C temperature root mean square speed of which of the following gases will be maximum

Question 6

Which of the following quantities is the same for all ideal gases at the same temperature ?

Question 7

If 𝒱_rms = root mean square speed of molecules,

𝒱_av = average speed of molecules.

𝒱_mp = most probable speed of molecules,

𝒱 = speed of sound in a gas

Then, identify the correct relation between these speeds.

Question 8

If the total translational kinetic energy of H₂ molecules is 7.5 × 10³ J for the gas filled in a container of 10-liter capacity, then the pressure will be in Nm^–2 -

Question 9

A gas molecule of mass m is incident normally on the wall of the containing vessel with velocity u. After the collision, magnitude of the change in momentum of the molecule will be –

Question 10

Two perfect gases at absolute temperatures

are mixed. There is no loss of energy. The temperature of the mixture if the masses of the molecules are

and the number of molecules in the gases are

(both gases are of same nature)

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May 13JEE & BITSAT