List of top Physics Questions on kinetic theory asked in KEAM

The INCORRECT assumption in the kinetic theory of gases is

If 300 J of heat energy is used to raise the temperature of one mole of an ideal gas by 10 K at constant pressure, then heat energy required to raise its temperature by 10 K at constant volume is $(R=8.3\text{ J mol}^{-1}\text{K}^{-1})$

If $f$ represents the intermolecular force between molecules and $V$ is the volume occupied by the gas molecules, then at high pressure and at low temperatures, the gas shows large deviation from the ideal behaviour because the fact that

If the diatomic molecule is non-rigid, then its molar specific heat capacity at constant volume is

The mass of one molecule of water is approximately

Which one is not an extensive variable?

If kinetic energy of one mole of monatomic gas is 24.4J, then temperature is(R = 8.314)

If rms speed is increased 20% and volume is kept constant, then increase in pressure is

If the mean kinetic energy of one mole of helium gas at \( 400\,K \) temperature is \( 5000\,J \), then that for one mole of neon gas at \( 800\,K \) is

For an ideal gas at temperature \( T \) having the total number of molecules \( N \), the product of the pressure and volume, \( PV \), is equal to \((k_B \text{ is the Boltzmann constant})\)

If the temperature of a gas is changed to \( 9 \) times the initial value, then the rms velocity of the gaseous molecule increases by

The statement, the total pressure of a mixture of ideal gases is the sum of partial pressures, is called as

When a gas is compressed in an insulated vessel

The specific heat capacity at constant volume \(C_v\) of a mole of an ideal gas is related to the gas constant \(R\) and the ratio of the specific heats \(\gamma\) as

If the mean free path of a gas molecule at $27^{\circ}\text{C}$ is $10\times10^{-7}\ \text{m}$, its mean free path at $87^{\circ}\text{C}$ is:

The number of molecules contained in the gas of mass M is ($M_o$ - molar mass, $N_A$ - Avogadro's number)

Which one is INCORRECT statement?

The number of degrees of freedom for monoatomic gas molecule is

For a diatomic gas molecule the value of \(C_p\) in \(J mol^{-1} K^{-1}\) is \((R = 8.2 J mol^{-1} K^{-1})\)

The product of the pressure P and volume V of an ideal gas in a container is related to the translational part of the internal energy, E as

The mean free path of a molecule is inversely proportional to

The temperature at which the r.m.s. velocity of oxygen molecule is equal to that of hydrogen molecule at 20 K is

The average kinetic energy of a monoatomic gas molecule kept at temperature \(27^\circ\)C is \((\text{Boltzmann constant}=1.3\times 10^{-23}\ \text{J K}^{-1})\)

If a monoatomic gas is compressed adiabatically to \((1/27)^{\text{th\) of its initial volume, then its pressure becomes}

The values of \(C_V\) and \(C_P\) for a diatomic gas are respectively \((R=\) gas constant\()\)