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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-3 section-3

Each section contains 100 MCQs on Drilling and Blasting .
21
It is the area of opening through which would pass the same quantity of air as pass through the mine under same pressure called . . . . . . . .
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Answer & Solution
Answer: Option B
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22
Calculate the total resistance for 20 numbers of electric delay detonators connected in parallel, each detonator has resistance of 2 ohms and resistance of connecting wire and blasting cable is 8 ohms and 3 ohms respectively?
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Answer & Solution
Answer: Option D
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23
The qualities of the stone dust should be
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Answer: Option E
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24
Primex is the trade name for
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Answer & Solution
Answer: Option A
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25
Which of the following is true for ordinary electric detonator?
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Answer & Solution
Answer: Option A
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26
The gradient from haulage engine to the brow is dipping nearly.
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Answer: Option C
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27
Self-rescue breathing apparatus model spiral 2C consists of
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Answer & Solution
Answer: Option E
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28
High moisture and high voltage coals are more subceptiable to . . . . . . . .
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Answer: Option B
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29
The basic principle of detonation is more intimate contact between the oxidizer and fuel, the higher is . . . . . . . .
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Answer & Solution
Answer: Option B
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30
Gelatinous and semi gelatinous explosives are used in . . . . . . . .
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Answer & Solution
Answer: Option A
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