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Mine Ventilation MCQs Questions & Answers | Mining Engineering

Learn and practice multiple-choice questions (MCQs) with answers related to Mine Ventilation. These resources are available for mining engineering students who wish to clear GATE exams, technical interviews, competitive examinations, and other entrance exams. The Mine Ventilation chapter is particularly important for students studying mining engineering. Page-1 section-2

Each section contains 100 MCQs on Mine Ventilation .
1
Specific gravity of H2S
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Answer: Option C
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2
For a person working in an atmosphere containing 21% O2, the exhaled air contains 4.5% CO2 and 16% O2. The respiratory quotient of breathing is
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Answer: Option B
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3
An air sample taken from the return airway of a district contains the following gases. The Graham's ratio for the district is
Gas CO2 H4 O2 N2 CO
Concentration % 0.4 1.17 19.92 78.49 0.02
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Answer: Option D
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4
In an underground working area, CH4 and CO2 are normally expected to be found respectively
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Answer: Option C
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5
The centrifugal fan types are . . . . . . . .
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Answer: Option A
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6
The maximum wet bulb temperature in u/g mines is
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Answer: Option D
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7
A mixture of specially prepared manganese dioxide and copper oxide called
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Answer: Option B
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8
A mine worker inhales normal air; whereas, the exhaled air contains 16.65% O2 and 3.83% CO2. The respiratory quotient of breathing for the worker is
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Answer: Option B
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9
The chemical Hopcalite used in
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Answer: Option B
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10
Air at a density of 1.2 kg/m3 flows in a straight duct such that the velocity at the centre is 12.5m/s. the method factor for the velocity profile is known to be 0.80. The velocity pressure value in the duct in Pa is
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Answer: Option C
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