Drilling and Blasting MCQs Questions & Answers

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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-4 section-8

Each section contains 100 MCQs on Drilling and Blasting .

Each oxygen cylinder in Novex reviving apparatus containing . . . . . . . . litter of O₂ charged to . . . . . . . . atmospheres.

A) 200; 60 B) 250; 80 C) 400; 120 D) 420, 140

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Mucking means

A) Loading and transportation B) Spraying of water in face C) Removal of blasting rock and clean the face D) Charging with explosions and stemming

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

To avoid freezing of NG explosive which agent is mixed.

A) PETN B) TNT C) Di Nitro Glycol D) ASA

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Maximum or shut off head developed by centrifugal fan when

A) Fan has maximum velocity B) Noair passes through fan C) Maximum air passes through fan D) None

Discuss

Answer & Solution

Answer: Option B

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The formula for theoretical depression of axial flow fan will be

A) $$H = \frac{{2{U^2}}}{{2g}}$$ B) $$H = \frac{{{V^2}\cot \theta }}{g}$$ C) $$H = \frac{{{U^2}}}{{2g}}$$ D) $$H = \frac{{{U^2}}}{g}$$

Discuss

Answer & Solution

Answer: Option D

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The self rescuer can be used for . . . . . . . . hours.

A) 1 B) 2 C) 3 D) $$\frac{1}{2}$$

Discuss

Answer & Solution

Answer: Option A

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Coal mines are said to be steep if the inclination in between.

A) 5° - 18° B) 18° - 40° C) 0° - 5° D) Above 40°

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Answer & Solution

Answer: Option B

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Main purpose of tippler

A) Tipping the mineral B) Turning the coal tub C) Move mineral from one place D) All of these

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Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Cooling chamber of protomark IV apparatus made of . . . . . . . .

A) Alluminium B) Brass C) Steel D) Copper

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

CO₂ absorbent keeps the percentage of CO₂ in breathing circuit below . . . . . . . .% in proto mark IV apparatus.

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

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

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Drilling and Blasting MCQs Questions & Answers | Mining Engineering