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-3

Fill the following equation gives 2KO₂ + 2H₂O →

A) $$2KOH + \frac{3}{2}{O_2}$$ B) $${K_2}C{O_3} + \frac{3}{2}{O_2}$$ C) $$KC{O_3} + {H_2}O$$ D) $$KHC{O_3}$$

Discuss

Answer & Solution

Answer: Option A

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

Which of the following detonators are used with P5 explosives (off-the-solid-blasting)?

A) instantaneous type detonators B) short delay aluminum incendive detonators C) carrick short delay non-incendive detonators D) aluminum based long delay detonators

Discuss

Answer & Solution

Answer: Option C

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

By varying pitch of blades, the quantity of air circulated can be varied, but the pressure produced is . . . . . . . .

A) Same B) Changes C) High D) Low

Discuss

Answer & Solution

Answer: Option A

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

The diameter of M.S pipe with plug for recording temperature of the atmosphere below stopping.

A) 18 mm B) 25 mm C) 38 mm D) 50 mm

Discuss

Answer & Solution

Answer: Option D

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

In this type of fan consists of two impellers rotating in opposite direction.

A) Contra rotating B) Axial flow C) Centrifugal D) Booster

Discuss

Answer & Solution

Answer: Option A

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

The minimum thickness of isolation stopping in I and II degree gassy mine.

A) 1 m B) 1.5 m C) 2 m D) 1.8 m

Discuss

Answer & Solution

Answer: Option A

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

An air screw fan is convinient as to use an under ground . . . . . . . . fan.

A) Booster fan B) Producer C) Centrifugal D) All of these

Discuss

Answer & Solution

Answer: Option A

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

Measuring accuracy of electronic amemometer.

A) ±1% B) ±2% C) ±3% D) ±0.1%

Discuss

Answer & Solution

Answer: Option B

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

The pressure on phreautic surface is

A) Less than atmospheric pressure B) Greater than atmospheric pressure C) Independent of atmospheric pressure D) Equal to atmospheric pressure

Discuss

Answer & Solution

Answer: Option D

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

Caustite is a mixture of . . . . . . . . used in gas mask.

A) Causitic soda + H₂S B) Pumica + Caustic soda C) H₂S + CO₃ D) None

Discuss

Answer & Solution

Answer: Option B

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