81. The important factors affecting gas emission are
82. The density of a gas inversely proportional to the absolute temperature when pressure is constant
83. Maximum permissable quantity of CO2 in mine air is
84. Critical temperature of CO2
85. Rakin interferometer manufactured in
86. Dry kata for hard manual workers is
87. In cat II and III degree gassy mine, major consideration to decide the quantity of air going u/g is the rate of emission of gas, should be diluted by ventilating air, that is percentage not more than . . . . . . . . in the main return air way of mine.
88. A person at walking at 3 km/hour consumes nearly . . . . . . . .
89. Critical temperature of nitrogen . . . . . . . .
90. This is the pressure exerted by a moving fluid on the surface parallel with the direction of movement called . . . . . . . .
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