Drilling and Blasting MCQs Questions & Answers

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-1 section-8

Most of the high explosives blasted with the help of detonator said to be

A) Fuse sensitive B) Cap sensitive C) Non-cap sensitive D) All of these

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Answer & Solution

Answer: Option B

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Specifications of stone dust should be tested once in . . . . . . . . months.

A) 1 B) 2 C) 3 D) 4

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Answer & Solution

Answer: Option D

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Wind rose is used to show

A) Air pollution B) Air velocity C) Air blast D) Air flow direction

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Answer & Solution

Answer: Option D

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Maximum velocities of ventilating air at other roadways.

A) 4 m/sec B) 4.8 m/sec C) 6 m/sec D) 8 m/sec

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Answer & Solution

Answer: Option C

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The main mine fan has to run for all . . . . . . . . days.

A) 300 B) 365 C) 280 D) 100

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Answer & Solution

Answer: Option B

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Deck loading is very useful when

A) strata consists of soft rocks B) strata consists of friable rocks C) strata consists of alternate band of hard and softer rocks D) seam water bearance is high

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Answer & Solution

Answer: Option C

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It would be advisable to design the ventilation system on the basis of . . . . . . . .

A) Dry bulb temperature B) RH C) Cooling power D) Wet bulb temperature

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Answer & Solution

Answer: Option D

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It is good practice to select a station where there is no area changes particularly on the upstream side (ventilation survey) should atleast.

A) Five roadway diameter B) Eight roadway diameter C) Ten roadway diameter D) Two roadway diameter

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Answer & Solution

Answer: Option A

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A.N explosives detonated by

A) Primer B) Detonator C) Booster D) All of these

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Answer & Solution

Answer: Option C

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During blasting operation in underground workings which have approached within 9m of each other the Shotfirer shall not fire in any of the faces unless some conditions are complied with. Which of the following is not to be observed as per CMR 2017?

A) all persons from both the faces are to be withdrawn B) persons shall be withdrawn only from the face where blasting is going to be held C) the place has to be fenced off to prevent inadvertent entering of persons D) all persons shall take proper shelter as stated in the statutes

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Answer & Solution

Answer: Option B

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