91. The instrument factor of kata thermometer.
92. Critical temperature of CH4.
93. The cause which tend to heat the air in mine . . . . . . . .
94. H2 found in u/g . . . . . . . . places.
95. Reduction of each 1% of oxygen percentage light of flame safety lamp diminishes by . . . . . . . .
96. The length of connecting cable of temperature humidity monitor is . . . . . . . . long.
97. The gas abundant in atmosphere comprising about $$\frac{4}{5}$$ of atmosphere called
98. In gassy coal mines Deg. II & III, the quantity of air should be more than the minimum stated above and a reasonable figure should be . . . . . . . . m3/min per person employed.
99. The flame safety lamp extinguished if the oxygen percentage falls to about . . . . . . . .
100. The standard atmospheric pressure also called as
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