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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-7

Each section contains 100 MCQs on Drilling and Blasting .
81
In case of opencast working as per CMR 2017 where any permanent building or structures not belonging to the owner lies within the danger zone, the aggregate maximum charge per round at one time shall not exceed
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Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board
82
The total pressure developed by a fan is equal to
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Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board
83
Each seam should have at least . . . . . . . . out lets to surface.
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Answer & Solution
Answer: Option D
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84
Air velocities at the working face should be between . . . . . . . .
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Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board
85
The portable apparatus which provides the current necessary for firing electric detonators is called
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Answer & Solution
Answer: Option B
No explanation is given for this question. Let's Discuss on Board
86
By using spot coolers in mines, they supply cool air at working faces, they have disadvantage of leaving the rest of the mine . . . . . . . .
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Answer & Solution
Answer: Option C
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87
The main element in fuse head of detonator is
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Answer & Solution
Answer: Option B
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88
Vistaram mask and speaking diaphragm fitted in the self contained breathing apparatus of mark . . . . . . . .
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Answer & Solution
Answer: Option B
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89
The case or container containing explosives shall be left or kept in a place of a mine which is legibly marked as
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Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board
90
A level roadway which leads from shaft passes through country rock, to cut across the lode at an angle to strike.
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Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board