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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-2 section-4

Each section contains 100 MCQs on Drilling and Blasting .
11
Higher limit of inflammability of coal dust for bituminous coal is . . . . . . . .
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Answer & Solution
Answer: Option D
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12
When adopting any of the methods of artificial respiration . . . . . . . . factor is very important.
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Answer & Solution
Answer: Option B
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13
Catalysist which changes CO to
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Answer & Solution
Answer: Option B
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14
The operating life of chemical and breathing apparatus AUER/SAR - 30.
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Answer & Solution
Answer: Option B
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15
It is a sudden combustion process of great intensity accompanied by release of large quantities of heat energy and in which original gas or solid substance converted instantaniously in to gasious products . . . . . . . .
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Answer & Solution
Answer: Option B
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16
A mixture of maganese dioxide and copper oxide called
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Answer & Solution
Answer: Option A
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17
Dipping connection in the are body joining two levels in metal mine.
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Answer & Solution
Answer: Option C
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18
The ventilation of drives exceeding 50 m length to be such as to dilute the nitrous fumes produced by blasting to . . . . . . . . and CO to . . . . . . . . within a period of . . . . . . . . min in long tunnel.
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Answer & Solution
Answer: Option A
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19
Prilled ammonium Nitrate of fertilizer grade mixed with diesel oil is used for . . . . . . . . in quarries.
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Answer & Solution
Answer: Option B
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20
A branch of air current taken from main air current called . . . . . . .
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Answer & Solution
Answer: Option B
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