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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.

Each section contains 100 MCQs on Drilling and Blasting .
1
Which of the following prime characteristic the nonel blasting has?
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Answer & Solution
Answer: Option B
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2
The main purpose of self rescuer is to enable the wearer to escape through an atmosphere resulting after a . . . . . . . . or after an . . . . . . . . in a mine.
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Answer & Solution
Answer: Option A
Solution:
A self-rescuer is a personal protective device used in underground mines to protect miners from toxic gases, especially carbon monoxide (CO), during emergencies.

The main purpose of a self-rescuer is to enable the wearer to safely escape from an area affected by hazardous atmospheres resulting from a fire or an explosion.

These incidents commonly release carbon monoxide and other harmful gases, which are life-threatening without respiratory protection.

Self-rescuers function by either filtering toxic gases (chemical-based) or providing a small oxygen supply (oxygen-based) for short durations, allowing enough time to evacuate.

Therefore, the correct answer is: Fire, Explosion
3
Cyclone, bag filter and scrubber can be used for control.
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Answer & Solution
Answer: Option C
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4
A two phase system in which an inner or dispersed phase is distributed in an outer called
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Answer: Option A
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5
The secondary barrier also called
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Answer: Option A
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6
The dust generally not used for spraying in coal faces.
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Answer: Option D
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7
The tubs capacity in direct rope haulage varying from when pedestal bearing are used.
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Answer: Option C
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8
No percentage of firedamp is explosive, when the percentage of oxygen is . . . . . . . . or less as per coward diagram.
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Answer: Option B
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9
Wedge cut pattern commonly used for . . . . . . . .
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Answer: Option A
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10
ANFO initiated by No. 8 detonator, in non mining practice.
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Answer: Option A
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