5 gm of air is heated from 273°K to 275°K. the change in internal energy of air will be

(CV = 172 cal/kg °K and 4.2 J/cal)

Moon has no atmosphere because

An ideal gas exert a pressure P. the mean kinetic energy per unit volume is E. which of the following relations is correct –

According to kinetic theory of gasses at absolute zero temperature

If 1 kg of water at its normal boiling point forms 1.671 m ³ of steam, the external latent heat of vaporization of water is about (J = 4200 J/kcal)

One mole of an ideal gas requires 207 J heat to raise the temperature by 10 K, when heated at constant pressure. If the same gas is heated at constant volume to raise the temperature by 10K, then heat required is

If P is the exerted by a gas and E is the K.E. per unit volume, then

A gas at a pressure P₀ is contained in a vessel. If the masses of all the molecules are halved and their velocities doubled, the resulting pressure P would be equal to

For an ideal gas, is

A gas in a container A is in thermal equilibrium with another gas of the same mass in container B. if we denote the corresponding pressures and volumes by the suffices A and B, then which of the following statement is most likely to be true

Boyl’s law is applicable in,

Real gases show mark able deviation from that of ideal gas behavior at

If the pressure of an ideal gas is decreased by 10% isothermally, then its volume will

One any planet, the presence of atmosphere implies [ν_rms = root mean square velocity of molecules and ν_ve = escape velocity]

The equation of state corresponding to 8 g of O₂ is,

Which of the following properties of gas molecule the one that is same for all ideal gases at a particular temperature is

Which of the following is the unit of specific

If E is the kinetic energy per mole of a gas, and T is the absolute temperature, then the universal gas constant is given by

N molecules, each of mass m, of gas A and 2 N molecules, each of mass 2 m, of gas B are contained in the same vessel which maintained at a temperature T. the mean square of he velocity of molecules of B type is denoted by ν² and the mean square of the X component of the velocity of A type is denoted by ω², thenis

Consider a gas with density ρ and C as the root mean square velocity of its molecules contained in a volume. If the system moves as a whole with velocity ν, then the pressure exerted by the gas is

The r.m.s velocity of oxygen molecules at 27°C is 318 m/s. the r.m.s velocity of hydrogen molecules at 127°C is

An ideal gas is that which can

Following gases are kept at the same temperature. Which gas possesses maximum r.m.s. speed?

By what percentage should the pressure of a given mass of a gas be increased so as to decrease its volume by 10% at a constant temperature?

The gas expands adiabatically at constant pressure. Such that its temperature Tα the value of of the gas is (MHT-CET