Q221
Open question100 vol. of water dissolving at 15°C only . . . . . . . . vol. of nitrogen.
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Mining Engineering · all questionsMine Ventilation
Mine Ventilation
practice.
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440
Questions
12/22
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Q222
Open questionThe product of motive column and density of air in D.C shaft called
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Q223
Open questionMethane absorbs radiation of wave length . . . . . . . .
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Q224
Open questionA 760 mm column of mercury is equivalent to . . . . . . . . meters of water column.
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Q225
Open questionThis is not a safety feature of flame safety lamp
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Q226
Open questionThe formula for calculating density of air in D.C shaft.
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Q227
Open questionThe O2 is lighter than air
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Q228
Open questionA three digit LCD indicates oxygen concentration within the range of 0 to . . . . . . . .
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Q229
Open questionThe inclinatin of water gauge is conveniently adjusted to . . . . . . . . as the sine of that angle is . . . . . . . .
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Q230
Open questionAir samples and temperature readings should be taken once in . . . . . . . . days.
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Q231
Open questionLeakage of intake to return at . . . . . . . .
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Q232
Open questionIf CO2 replaces air by . . . . . . . .% headache of person causes.
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Q233
Open questionIs the OXD-2M instrument is
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Q234
Open questionMiddle infra-red region has special significance for detection of
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Q235
Open questionThe algebric sum of static pressure and velocity pressure called as . . . . . . . .
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Q236
Open questionMethane drainage being experienced at . . . . . . . . colliery in India.
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Q237
Open questionThe gas with bitter taste is
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Q238
Open question100 Vol. of water at 20°C dissolves about . . . . . . . . vol. of oxygen.
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Q239
Open questionIf CO2 replaces air by . . . . . . . .% death after hours.
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Q240
Open questionCarbon monoxide imparts a . . . . . . . . to the blood.
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