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-7 section-8

Number of holes drilled in one shift of eight hours in stone face.

A) 10 B) 12 C) 15 D) 20

Discuss

Answer & Solution

Answer: Option C

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

In fan, the air has no pre-rotation before entering the impeller this entering of air is called

A) Meridional entry B) Non rotational entry C) Circulation entry D) None

Discuss

Answer & Solution

Answer: Option A

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

The percentage of potasium nitrate present in gun powder.

A) 25% B) 50% C) 100% D) 75%

Discuss

Answer & Solution

Answer: Option D

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

The sum of kinetic energy and pressure energy called . . . . . . . .

A) Total energy B) Velocity energy C) Pressure difference D) All of these

Discuss

Answer & Solution

Answer: Option A

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

An organisation developed for petrolium export countries called . . . . . . . .

A) OPEC B) APEF C) CIPPEL D) ODEN

Discuss

Answer & Solution

Answer: Option A

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

The Nationalisation of coal industry was done on . . . . . . . .

A) 16^th October, 1971 B) 1^st May, 1972 C) 30^th June, 1973 D) 1^st November, 1975

Discuss

Answer & Solution

Answer: Option B

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

Underground coal mines are in principle ventilated by exausting system, so that

A) Cool and fresh intake air can enter u/g B) Build-up methane concentration decreased C) Spontanious heating risk reduced D) Fumes fastly removed in case of fire

Discuss

Answer & Solution

Answer: Option B

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

Gas mask bottom most layer consist of

A) Hopacolite B) Silica gel C) Caustite D) Charcoal

Discuss

Answer & Solution

Answer: Option D

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

Though the charging, firing of shots in opencast working is not permitted within the danger zone but still it is permitted under the CMR 2017 only if which of the following is maintained?

A) The Blaster/Shotfirer shall ensure that all persons have taken proper shelter within the danger zone B) Sufficient warning is given over the entire area C) Both A and B D) It is not permitted under any circumstances

Discuss

Answer & Solution

Answer: Option C

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

Carbide lamps can with stand air velocity of

A) 2 m/sec B) 5 m/sec C) 8 m/sec D) 12 m/sec

Discuss

Answer & Solution

Answer: Option B

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