The mean free path () of a gas sample is given by:
1.
2.
3.
4. none of these
The maximum deviation from ideal gas behaviour takes place -
1. At high temperature and low pressure.
2. At low temperature and high pressure.
3. At high temperature and high pressure.
4. At low temperature and low pressure.
At STP, 0.50-mole H2 gas and 1.0 mole He gas
1. have equal average kinetic energies
2. have equal molecular speeds
3. occupy equal volumes
4. have equal effusion rates
With the increase of pressure, the mean free path:
1. decreases
2. increases
3. becomes zero
4. remains the same
Internal energy and pressure of a gas per unit volume are related as
1. p= E
2. p = E
3. p=E
4. p = 2E
If a gas expands at constant temperature, it indicates that
1. kinetic energy of molecules decreases
2. pressure of the gas increases
3. kinetic energy of molecules remains the same
4. number of the molecules of gas increases
At what temperature will the total K.E. of 0.3 mol of He be the same as the total K.E. of 0.4 mol of Ar at 400 K
1. 400K
2. 300K
3. 346K
4. 533K
Equal amount (mass) of methane and ethane have their total translational kinetic energy in the ratio
3: 1 then their temperatures are in the ratio.
(1) 5 : 8
(2) 45 : 8
(3) 15 : 8
(4) 8 : 5
The kinetic energy for 14 grams of nitrogen gas at 127°C is nearly (mol. mass of nitrogen = 28 and gas constant = 8.31JK–1mol–1)
(1) 1.0 J
(2) 4.15 J
(3) 2493 J
(4) 3.3 J
If the average velocity of N2 molecules is 0.3 m/s at 27°C, then the velocity of 0.6 m/s will take place at
(1) 273 K
(2) 927 K
(3) 1000 K
(4) 1200 K