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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-10 section-1

Each section contains 100 MCQs on Mine Ventilation .
91
Which one of the following is used as a reviving apparatus in u/g coal mine?
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Answer & Solution
Answer: Option B
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92
When CO reacts with haemoglobin it changes in to . . . . . . . .
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Answer & Solution
Answer: Option B
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93
A mine ventilation system consists of two splits A and B with resistances of 0.8 Ns2m-8 and 3.2 Ns2m-8, respectively as shown in figure. Trunk airways have resistance of 0.2 Ns2m-8. The main mine fan is generating pressure of 500 Pa.
Mine Ventilation mcq question image
The air quantities in m3/s circulated in the splits A and B respectively are
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Answer & Solution
Answer: Option C
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94
A sealed area known to have black damp has 18% O2, 2% CO2, and 78% N2. If fresh air has 21% O2, 0.03% CO2 and 78.97% N2, the percentage of black damp in the are is
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Answer & Solution
Answer: Option B
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95
Explosibility of H2 by volume is . . . . . . . .
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Answer & Solution
Answer: Option A
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96
Which one of the following composition of methane in air is most explosive in nature?
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Answer: Option B
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97
The wet kata for light manual workers is
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Answer & Solution
Answer: Option D
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98
Air samples collected from the intake and the return gates of a retreating longwall face show methane concentration values of 0.1% and 0.8% respectively. The production from the longwall face is 2000 tonne/day and the air quantity circulating the face is 15 m3/s. The rate of methane emission in m3 per tonne of coal produced is
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Answer: Option D
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99
In order to estimate the NVP in a mine, measurements are made at the main fan as shown below.
Fan speed (RPM) Fan drift pressure (Pa) Fan quantity (m3/s)
800 655 82.2
950 730 85.5
The NVP in Pa is
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Answer & Solution
Answer: Option B
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100
Match the following in the context of underground mine environment
Instrument Measuring parameter
P. Haldane apparatus I. Humidity
Q. Godbert-Greenwald apparatus II. Air velocity
R. Hygrometer III. Mine air composition
S. Anemometer IV. Ignition point temperature
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Answer & Solution
Answer: Option B
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