51. Gas equation PV=nRT is obeyed by (BHV 200)
A. only isothermal process
B. only adiabatic process
C. Both A and B
D. None of these
Answer : Option C
52. The average kinetic energy of an ideal gas per molecule in SI unit at \(25^{\circ}C\) will be (CBSE 1996)
A. \(6.17\times 10^{-21}\ KJ\)
B. \(6.17\times 10^{-21}\ J\)
C. \(6.17\times 10^{-20}\ J\)
D. \(7.17\times 10^{-20}\ J\)
Answer : Option B
54. Equal masses of \(CH_{4}\) and \(H_{2}\) are mixed in an empty container at \(25^{\circ}C\). The fraction of the total pressure exerted by \(H_{2}\) is
A. \(\frac{1}{2}\)
B. \(\frac{8}{9}\)
C. \(\frac{1}{9}\)
D. \(\frac{16}{17}\)
Answer : Option B
55. The ratio between the root mean square (rms) velocity of \(H_{2}\) at 50L that of at 800 K is ?
56. A real gas behave more ideally at
A. Low temperature and low pressure
B. Low temperature and high pressure
C. High temperature and low pressure
D. High temperature and high pressure
Answer : Option C
57. According to the kinetic theory of gases
A. The pressure exerted by a gas is proportional to mean square velocity of the molecules.
B. The pressure exerted by the gas is proportional to the root mean square velocity of the molecules.
C. The root mean square velocity is inversely proportional to the temperature
D. The mean transitional K.E of molecule is directly proportional to the absolute temperature
Answer : Option D
58. The value of vander waals constant a for gses \(O_{2}\), \(N_{2}\), \(NH_{3}\) and \(CH_{4}\) are 1.36, 1.39, 4.37 and 2.253 \(L^{2}\ atm\ mol^{-1}\) respectively the gas which can liquefied most easily will be
59. A certain sample of a gas volume 0.24 Liter measured at 1.0 atm pressure and \(273^{\circ}C\) its volume will be
60. If a volume containing gas is compressed to half, how many moles of gas remained in the vessel