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Drilling and Blasting MCQs Questions & Answers | Mining Engineering

Learn and practice multiple-choice questions (MCQs) with answers related to Drilling and Blasting. These resources are available for mining engineering students who wish to clear GATE exams, technical interviews, competitive examinations, and other entrance exams. The Drilling and Blasting chapter is particularly important for students studying mining engineering. Page-9 section-2

Each section contains 100 MCQs on Drilling and Blasting .
81
Reversal of air current of natural ventilation, occurs.
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Answer & Solution
Answer: Option D
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82
Which factor is important in sealing . . . . . . . .
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Answer & Solution
Answer: Option C
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83
An explosion is accompanied by violence on . . . . . . . . scale.
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Answer & Solution
Answer: Option D
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84
The coefficient of friction measured in . . . . . . . .
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Answer & Solution
Answer: Option B
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85
The air lock designs are
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Answer & Solution
Answer: Option D
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86
In degree I mines the % inflammable gas is
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Answer & Solution
Answer: Option A
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87
VOD of OCG is in m/sec
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Answer & Solution
Answer: Option A
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88
The useful power developed by air current called . . . . . . . .
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Answer & Solution
Answer: Option B
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89
High shock loss occurs in a mine ventilation system at
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Answer & Solution
Answer: Option D
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90
Nearly flat gradients required for operation of thus haulage.
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Answer & Solution
Answer: Option B
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