A given amount of gas at 20o C has a pressure P. The temperature at which the pressure will be 2 P (at constant volume) is approximately
113o C
40o C
213o C
313o C
The kinetic energy of 1 gram of hydrogen gas at 27o C will be
For O2 gas
1.40
1.33
1.66
1.72
The number of degrees of freedom for molecules of a monoatomic gas is
3
4
5
6
The temperature of H2 at which the r.m.s. velocity of its molecules is seven times the r.m.s. velocity of the molecules of nitrogen at 300 K will be:
2500 K
1800 K
1850 K
1050 K
When the temperature of a gas filled in a closed vessel is increased by 1o C, its pressure increases by 0.4 %. The initial temperature of the gas was
25o C
250 K
250o C
25 K
Air is filled at 60o C in a vessel with open mouth. The vessel is heated to a temperature T so that 1/4th part of air escapes. Assuming the volume of vessel remains constant, the value of T is
80o C
143o C
333o C
416o C
