A gas at a temperature of 250 K is contained in a closed vessel. If the gas is heated through 1 K, then percentage increase in its pressure is
0.1 %
0.2 %
0.3 %
0.4 %
The average translational kinetic energy of O2 molecules (relative molar mass 32) at a particular temperature is 0.048 eV. The translational kinetic energy of N2 molecules (relative molar mass 28) in eV at the same temperature is:
0.0015
0.003
0.048
0.768
An electric fan is switched on in a closed room. The air in the room
is cooled
is heated
maintains its temperature
is heated or cooled depending upon atmosphere pressure
The relation between pressure P and average kinetic energy E per unit volume of a gas is:
P=2E/3
P=E/3
P=3E/2
P=3E
If a gas has n degrees of freedom, ratio of specific heat of gas is:
The relation PV=RT can describe behavior of a real gas at :
High temperature and high density
High temperature and low density
Low temperature and low density
Low temperature and high density
We have a jar filled with gas characteristed by parameters P, V and T and another jar B filled with a gas with a gas with parameters 2 P, V/4, 2 T; where the symbols have their usual meanings. The ratio of the number of molecules of jar A to those of jar B is:
1:1
1:2
2:1
4:1
Three perfect gases at absolute temperatures T1, T2, and T3 are mixed. The masses of molecules are m1, m2, and m3 and the number of molecules are Tn1, n2, and n3 respectively. Assuming no loss of energy, the final temperature of the mixture is:
Two gases are at absolute temperature 300 K and 350 K respectively. The ratio of average kinetic energy of their molecules is:
7:6
6:7
36:49
49:36
The degree of freedom in case of a monoatomic gas is:
1
3
5
4
