MEDIUM
NEET
IMPORTANT
Earn 100

The number of gas molecules striking per second per square meter of the top surface of a table placed in a room at 20°C and 1 atmospheric pressure is of the order of (kb=1.4×10-23 J K-1 and the average mass of an air molecule is 5×10-27 kg

50% studentsanswered this correctly

Important Questions on Behaviour of Perfect Gas and Kinetic Theory

EASY
NEET
IMPORTANT
Four particles have velocities 1, 0, 2, 3 m s-1. The root-mean-square velocity of the particles is: (in m s-1)
EASY
NEET
IMPORTANT
One mole of a diatomic gas undergoes a process P=P0[1+(V/V0)3], where P0 and V0 are constants. The translational kinetic energy of the gas when V=V0 is given by
EASY
NEET
IMPORTANT
One kilogram of a diatomic gas is at a pressure of 8×104 N m-2. The density of the gas is 4 kg m-3. What is the energy of the gas due to its thermal motion?
MEDIUM
NEET
IMPORTANT
At constant temperature on increasing the pressure of a gas by 5 % its volume will decrease by
EASY
NEET
IMPORTANT
The average kinetic energy of the molecules of an ideal gas at 10°C has the value E. The temperature at which the kinetic energy of the same gas becomes 2E is,
EASY
NEET
IMPORTANT

A jar has a mixture of hydrogen and oxygen gas in the ratio of 1:5. The ratio of mean kinetic energies of hydrogen and oxygen molecules is

EASY
NEET
IMPORTANT

The average kinetic energy of molecules are