Q121
Open questionCO2 found in dip of depillaring areas in coal mines due to it is
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Mining Engineering · all questionsMine Ventilation
Mine Ventilation
practice.
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440
Questions
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Q122
Open questionLife of OXD-2M O2 meter works for a . . . . . . . . Period continuously, when fully charged.
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Q123
Open questionWarmup time of OXD-2M instrument.
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Q124
Open questionThe relative humidity of saturated air is . . . . . . . .
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Q125
Open questionWhite washing is not done from the face upto
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Q126
Open questionAt what percentage of black damp, the mine atmosphere becomes non explosive irrespective of % of fire damp.
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Q127
Open questionMine air should contain minimum . . . . . . . .% O2 in USSR.
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Q128
Open questionThe common test for . . . . . . . . consists of exposing a filter paper soaked with starch and potassium iodide solution of the gas.
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Q129
Open questionSO2 specific gravity is
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Q130
Open questionThe temperature and humidity monitor consists of . . . . . . . . units.
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Q131
Open questionNitrous fumes are formed during
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Q132
Open questionMEMACS-I will detect methane in the range . . . . . . . . in the general body of air.
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Q133
Open questionExhaust fan located at the mouth of . . . . . . . . shaft.
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Q134
Open questionMethane telemonitory system consists . . . . . . . . sets of equipment.
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Q135
Open questionAn Indian worker may continue to work reasonably well in u/g atmosphere where the wet bulb temperature is nearly about . . . . . . . .°C.
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Q136
Open questionD6 methanometer, suitable for checking gas accumulation with measurement ranging from . . . . . . . . by volume.
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Q137
Open questionThe smell of SO2
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Q138
Open questionThe increase of temperature with depth at a definite rate called . . . . . . . .
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Q139
Open questionU.C shaft is used for sucking . . . . . . . . air.
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Q140
Open questionThe main mechanical ventilator deals with all the air in mine has to be situated on . . . . . . . .
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