Q141
Open questionMine air should contain minimum . . . . . . . .% O2 in USA.
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Mining Engineering · all questionsMine Ventilation
Mine Ventilation
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Q142
Open questionWith 0.15% of CO in air the bird shows
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Q143
Open questionAn instrument used to find relative humidity of air in mines.
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Q144
Open questionShelf live of the CO tubes in multi gas detector
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Q145
Open questionA person doing exercise consumes oxygen at . . . . . . . .
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Q146
Open questionThe lowest possible temperature and is the point at which all heat should be extracted from a substance, if it can be cooled sufficiently called
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Q147
Open question25% of black damp (75% air, i.e. 15% O2 air 3% CO2) the physiological effect will be causes is
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Q148
Open questionAfter affects of CO poisoning are
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Q149
Open questionPlates of oldham cap lamp battery is immersed in a solution. What is composition of solution?
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Q150
Open questionThe bulb of kata thermometer covered with . . . . . . . . cloth.
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Q151
Open questionBarometric pressure is expressed in
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Q152
Open questionThe equation of Boyle's Law is
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Q153
Open questionThe gas law states, the volume of given mass of gas is directly proportional to its absolute temperature when pressure is constant.
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Q154
Open questionThe welt bulb temperature in development face should not exceed . . . . . . . .
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Q155
Open questionPS detector is manufactured by . . . . . . . .
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Q156
Open questionLowest percentage of moisture content in methane air mixture at which no explosion take place is
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Q157
Open questionThe percentage of argon present in atmospheric air by volume.
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Q158
Open questionEvery fan on surface should be capable of . . . . . . . . the ventilation, if electrically driven.
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Q159
Open questionInfrared spectrometry commonly used for
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Q160
Open questionH2 is . . . . . . . . gas.
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