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-5

By using of air leg relieves the operation of . . . . . . . . . involved in holding drill.

A) Fatigue B) Stress C) Strain D) Weight

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Answer & Solution

Answer: Option A

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A roadway in the ore body which follows strike.

A) Sublevel string B) Level C) Dip D) Rise

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Answer & Solution

Answer: Option B

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The VOD of primer in m/sec in m/sec

A) 5000 B) 6000 C) 7000 D) 8000

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Answer & Solution

Answer: Option C

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In metal mining terminology development of mine means formation of . . . . . . . .

A) Network of shafts B) Drifts C) Rises D) All of these

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Answer & Solution

Answer: Option D

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What do you understand by power of ventilation.

A) Leakage of ventilation path B) Size of regulations C) Air flow through duct of varying cross section D) Rate at which work is done to maintain the air flow through a system

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Answer & Solution

Answer: Option D

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Lower inflammability of coal dust is . . . . . . . .

A) 2 gm/cc B) 1 gm/cc C) 3 gm/cc D) 5 gm/cc

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Answer & Solution

Answer: Option B

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Maximum velocities of ventilating air at working faces in development/depillaring

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

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Answer & Solution

Answer: Option C

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What will be the RF of 1.8 cm on the maps represent 9 km.

A) 1 : 500000 B) 1 : 50000 C) 1 : 5000 D) 1 : 20000

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Answer & Solution

Answer: Option A

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In degree II gassy mines the rate of emission of gas m³/t of coal raised is . . . . . . . .

A) 1 - 5 B) 5 - 10 C) 1 - 10 D) 10 - 20

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Answer & Solution

Answer: Option C

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The w.g developed by the axial flow fan . . . . . . . . in cm.

A) 6.5 B) 8.5 C) 12.5 D) 15.5

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Answer & Solution

Answer: Option C

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