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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-8 section-3

Each section contains 100 MCQs on Drilling and Blasting .
71
When the barometric pressure decreases, the methane emmission in under ground work is . . . . . . . .
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Answer & Solution
Answer: Option C
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72
Optimum rate of stone dusting in under ground coal mines is . . . . . . . .
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Answer & Solution
Answer: Option B
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73
The vertical depth of a place in the mine from surface.
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Answer: Option B
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74
Intake air to a L/W panel has CO at 10 ppm and O2 at 20.5, where as return air has CO at 30 ppm and O2 at 20%. The Grahams ratio % for the oxidation process in pannel is . . . . . . . .
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Answer & Solution
Answer: Option B
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75
The deposit in shallow depth is approached by
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Answer: Option B
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76
Which law explains fluid flow
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Answer & Solution
Answer: Option B
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77
The isolation stopings should be well locked to roof, floor, sides, the minimum depth of locking should be in sand stone roof.
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Answer & Solution
Answer: Option C
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78
The percentage of sulphur present in gun powder.
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Answer & Solution
Answer: Option A
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79
Strength of booster is
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Answer: Option D
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80
The main purpose of emergency stoping is . . . . . . . . the area immediately, prevent access of air into fire area.
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Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board