Law of Equipartition of Energy

Author:Embibe Experts
NEET
IMPORTANT

Important Questions on Law of Equipartition of Energy

EASY
IMPORTANT

An oxygen molecule has degrees of freedom at room temperature.

MEDIUM
IMPORTANT

The internal energy of 10 g of nitrogen at N.T.P. is about, (R=8.31 J K-1)

EASY
IMPORTANT

If α moles of a monoatomic gas are mixed with β moles of a polyatomic gas and mixture behaves like diatomic gas, then [neglect the vibrational mode of freedom]

EASY
IMPORTANT

If hydrogen gas is heated to a very high temperature, then the fraction of energy possessed by gas molecules correspond to rotational motion

MEDIUM
IMPORTANT

Three perfect gases at absolute temperatures T1,T2  and T3 are mixed. If number of molecules of the gases are n1, n2 and n3 respectively then temperature of mixture will be (assume no loss of energy)

MEDIUM
IMPORTANT

A box of negligible mass containing 2 moles of an ideal gas of molar mass M and adiabatic exponent γ moves with constant speed v on a smooth horizontal surface. If the box suddenly stops, then change in temperature of gas will be

MEDIUM
IMPORTANT

When one mole of monatomic gas is mixed with one mole of a diatomic gas, then the equivalent value of γ for the mixture will be (vibration mode neglected)

HARD
IMPORTANT

14 g of CO at 27°C is mixed with 16 g of O2 at 47°C. The temperature of mixture is (vibration mode neglected)

MEDIUM
IMPORTANT

A mixture of ideal gas has 2 moles of He4 moles of O2 and 1 mole of O3 at absolute temperature T. The internal energy of the mixture is

HARD
IMPORTANT

Nitrogen gas is filled in an insulated container. If α fraction of moles dissociates without exchange of any energy, then the fractional change in its temperature is

MEDIUM
IMPORTANT

If a gas has 'f' degree of freedom, the ratio of the specific heats of the gases CpCv is

EASY
IMPORTANT

An ant is moving on a plane horizontal surface. The number of degrees of freedom of the ant will be

EASY
IMPORTANT

For a _____ gas having vibrational mode, CPCV=97.

EASY
IMPORTANT

The translational _____ energy of an ideal gas is E= 32 kBNT, where N is a total number of molecules.

EASY
IMPORTANT

Each vibrational mode gives _____ degrees of freedom.(one/two/three)

EASY
IMPORTANT

A container has N molecules at absolute temperature T. If the number of molecules is doubled but kinetic energy in box remains the same as before, the absolute temperature of the gas is