Mine Ventilation MCQs Questions & Answers

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Learn and practice multiple-choice questions (MCQs) with answers related to Mine Ventilation. These resources are available for mining engineering students who wish to clear GATE exams, technical interviews, competitive examinations, and other entrance exams. The Mine Ventilation chapter is particularly important for students studying mining engineering. Page-3 section-2

Each section contains 100 MCQs on Mine Ventilation .

CO₂ found in dip of depillaring areas in coal mines due to it is

A) Heavier than air B) Lighter than air C) Equal of air D) Because of gradient

Discuss

Answer & Solution

Answer: Option A

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

Life of OXD-2M O₂ meter works for a . . . . . . . . Period continuously, when fully charged.

A) 20 hours B) 27 hours C) 30 hours D) 48 hours

Discuss

Answer & Solution

Answer: Option B

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

Warmup time of OXD-2M instrument.

A) 2 sec B) 4 sec C) 5 sec D) 10 sec

Discuss

Answer & Solution

Answer: Option C

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

The relative humidity of saturated air is . . . . . . . .

A) 35% B) 80% C) 90% D) 100%

Discuss

Answer & Solution

Answer: Option D

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

White washing is not done from the face upto

A) 400 m B) 300 m C) 100 m D) 60 m

Discuss

Answer & Solution

Answer: Option C

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

At what percentage of black damp, the mine atmosphere becomes non explosive irrespective of % of fire damp.

A) 5% B) 25% C) 35% D) 45%

Discuss

Answer & Solution

Answer: Option C

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

Mine air should contain minimum . . . . . . . .% O₂ in USSR.

A) 17.5 B) 19 C) 19.5 D) 20

Discuss

Answer & Solution

Answer: Option D

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

The common test for . . . . . . . . consists of exposing a filter paper soaked with starch and potassium iodide solution of the gas.

A) H₂S B) NO₂ C) SO₂ D) NH₃

Discuss

Answer & Solution

Answer: Option A

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

SO₂ specific gravity is

A) 1.52 B) 0.967 C) 2.21 D) 0.552

Discuss

Answer & Solution

Answer: Option C

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

The temperature and humidity monitor consists of . . . . . . . . units.

A) 1 B) 3 C) 4 D) 5

Discuss

Answer & Solution

Answer: Option B

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

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Mine Ventilation MCQs Questions & Answers | Mining Engineering