Problem 12
The compressibility factor of an ideal gas is: (a) 1 (b) 2 (c) 4 (d) 0
Problem 13
The temperature below which a gas can be made to liquefy by variation in pressure is called its: (a) Inversion temperature (b) Critical temperature (c) Neutral temperature (d) Curie point
Problem 15
At what centigrade temperature will be the volume of a gas at \(0^{\circ} \mathrm{C}\) double of itself, when pressure remains constant? (a) \(0^{\circ} \mathrm{C}\) (b) \(273^{\circ} \mathrm{C}\) (c) \(273 \mathrm{~K}\) (d) \(546 \mathrm{~K}\)
Problem 16
Pressure of a mixture of \(4 \mathrm{~g}\) of \(\mathrm{O}_{2}\) and \(2 \mathrm{~g}\) of \(\mathrm{H}_{2}\) confined in a bulb of \(1.0 \mathrm{~L}\) capacity at \(0^{\circ} \mathrm{C}\) is: (a) \(25.18 \mathrm{~atm}\) (b) \(31.205 \mathrm{~atm}\) (c) \(40.215 \mathrm{~atm}\) (d) \(15.210 \mathrm{~atm}\)
Problem 17
A closed container contains equal number of oxygen and hydrogen molecules at a total pressure of \(740 \mathrm{~mm}\). If oxygen is removed from the system then pressure will: (a) Become double of \(740 \mathrm{~mm}\) (b) Become half of \(740 \mathrm{~mm}\) (c) Become \(1 / 9\) of \(740 \mathrm{~mm}\) (d) Remain unchanged
Problem 18
The volume occupied by \(9.0 \mathrm{~g}\) of nitrogen gas at \(300 \mathrm{~K}\) and \(750 \mathrm{mmHg}\) pressure is: (a) \(5.854\) (b) \(6.7432\) (c) \(8.8462\) (d) \(8.0225\)
Problem 21
'n' moles of an ideal gas at temperature \(\mathrm{T}\) (in Kelvin) occupy ' \(\mathrm{V}\) ' litres of volume, exerting a pressure of ' \(\mathrm{P}\) ' atomospheres. What is its concentration (in \(\mathrm{mol} \mathrm{L}^{-1}\) )? \((\mathrm{R}=\) gas constant \():\) (a) \(\mathrm{P} / \mathrm{RT}\) (b) \(\mathrm{PT} / \mathrm{R}\) (c) \(\mathrm{RT} / \mathrm{P}\) (d) \(\mathrm{R} / \mathrm{PT}\)
Problem 22
\(7.5 \mathrm{~g}\) of gas occupy \(5.6\) litres of volume at STP. The gas is (Atomic weight of \(\mathrm{C}, \mathrm{N}\), and \(\mathrm{O}\) are 12,14 and \(16 \mathrm{re}-\) spectively): (a) \(\mathrm{NO}\) (b) \(\mathrm{N}_{2} \mathrm{O}\) (c) CO (d) \(\mathrm{CO}_{2}\)
Problem 23
A gas diffuses four times as quickly as oxygen. The molar weight of gas is: (a) 2 (b) 4 (c) 8 (d) 16
Problem 24
Compressibility factor for 1 mol of a van der Waals gas at \(0^{\circ} \mathrm{C}\) and 100 atmospheric pressure is found to be \(0.5\), the volume of gas molecule is: (a) \(2.0224 \mathrm{~L}\) (b) \(1.4666 \mathrm{~L}\) (c) \(0.8542 \mathrm{~L}\) (d) \(0.1119 \mathrm{~L}\)
