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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-10 section-7

Each section contains 100 MCQs on Drilling and Blasting .
91
Name the instrument to measure incubation period . . . . . . . .
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Answer & Solution
Answer: Option D
No explanation is given for this question. Let's Discuss on Board
92
The barrier must be provided at a distance of not less than . . . . . . . .m from nearest working face at not more than . . . . . . . .m from farthest face.
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Answer & Solution
Answer: Option B
No explanation is given for this question. Let's Discuss on Board
93
With reference to coward diagram, match the following the context of explosibility of a mixture of normal air and methane air
O2% ; CH4% Mixture Status
a. 20.5 ; 2.4 1. Impossible mixture
b. 19.0 ; 9.5 2. Non explosive
c. 17.0 ; 19 3. Potentially Explosive
d. 20 ; 19.5 4. Explosive
Discuss
Answer & Solution
Answer: Option A
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94
Smoke helmet having . . . . . . . . eye pieces fitted in alluminium frame.
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Answer & Solution
Answer: Option C
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95
A person inhales . . . . . . . . l/min, the O2 consumption . . . . . . . . l/min when doing normal work.
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Answer & Solution
Answer: Option C
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96
The proto mark IV apparatus O2 cylinder made of . . . . . . . . and empty capacity . . . . . . . .
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Answer & Solution
Answer: Option A
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97
Fibre, charcoal, wood meal, sulphur in explosive composition act as . . . . . . . .
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Answer & Solution
Answer: Option D
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98
The drilling pattern followed in underground coal mine is
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Answer & Solution
Answer: Option A
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99
Number of swings of shovel for loading one dumper is . . . . . . . .
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Answer & Solution
Answer: Option B
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100
Empty, cylinder capacity of BG 174 is . . . . . . . . litters.
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Answer & Solution
Answer: Option B
No explanation is given for this question. Let's Discuss on Board