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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-2 section-5

Each section contains 100 MCQs on Mine Ventilation .
11
D.C shaft is used for sending . . . . . . . . air.
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Answer & Solution
Answer: Option C
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12
The fluid commonly used in 'U' tube manometer of pressure difference is small.
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Answer & Solution
Answer: Option B
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13
The percentage of CO2 present in atomospheric air by weight
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Answer & Solution
Answer: Option A
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14
A portable optical methanometer has been designed and developed jointly by
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Answer & Solution
Answer: Option A
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15
Fans classified in to . . . . . . . . types.
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Answer & Solution
Answer: Option C
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16
Canaries or small birds can survive if O2 percentage is as low as . . . . . . . .
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Answer & Solution
Answer: Option B
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17
In rainy season maximum humidity in sea shore areas like Calcutta will be about
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Answer & Solution
Answer: Option D
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18
Mine air should contain minimum . . . . . . . .% O2.
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Answer & Solution
Answer: Option C
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19
The following equation explain the explosibility of mixture of combustable gasses
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Answer & Solution
Answer: Option B
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20
Black damp composition is
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Answer & Solution
Answer: Option B
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