Miscellaneous in Mining MCQs Questions & Answers

Miscellaneous in Mining MCQs Questions & Answers | Mining Engineering

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

The dust sampling methods are . . . . . . . .

A) Centrifuging B) Impingement C) Optical method D) Filteration E) All of these

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Answer & Solution

Answer: Option E

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Mucus in the throat and respiratory passages catches the dust size particles of coarser size . . . . . . . . and above diameter.

A) 5μ B) 7μ C) 9μ D) 10μ

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Answer & Solution

Answer: Option D

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The range of coal dust particles producing most violent explosion is . . . . . . . .

A) 0.5 - 1μ B) 1 - 10μ C) 10 - 100μ D) 100 - 500μ

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Answer & Solution

Answer: Option C

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The area of the regulator required for flow of a certain quantity of air can be circulated from the formule.

A) $$\frac{{{\text{PQ}}}}{{75}}$$ B) $$\frac{{{\text{KS}}{{\text{Q}}^2}}}{{{{\text{A}}^3}}}$$ C) $$\frac{{0.385{\text{Q}}}}{{\sqrt {\text{P}} }}$$ D) None

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Answer & Solution

Answer: Option C

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Dust incharge can work as sampling incharge in a mine when the average monthly output is . . . . . . . .

A) < 4000 te B) > 5000 te C) < 5000 te D) > 8000 te

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Answer & Solution

Answer: Option C

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If the battery voltage is below . . . . . . . . in flame safety lamp of GL-60 should be discarded.

A) 2.5 V B) 3 V C) 2.3 V D) 2.8 V

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Answer & Solution

Answer: Option C

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The formulae for illumination of surface = . . . . . . . .

A) $$\frac{{{\text{candle of source}}}}{{{\text{distance in meters}}}} \times \sec \theta $$ B) $$\frac{{{\text{candle of source}}}}{{{{\left( {{\text{distance}}} \right)}^3}}} \times \cos \theta $$ C) $$\frac{{{\text{candle of source}}}}{{{{\left( {{\text{distance in meters}}} \right)}^2}}} \times \cos \theta $$ D) $$\frac{{{{\left( {{\text{distance in meters}}} \right)}^2}}}{{{\text{candle of source}}}} \times \cos \theta $$

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Answer & Solution

Answer: Option C

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Which flame safety lamp is more sophisticated.

A) GL-5 B) GL-4 C) GL-60 D) GL-50

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Answer & Solution

Answer: Option C

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The end of charge is marked (in lead acid battery) in the libaration of O₂ and H₂ from the electrolite a condition known as

A) Hissing B) Gassing C) Passing D) Flurishing

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Answer & Solution

Answer: Option D

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Inhalation of hydrated magnesium silicate causes the disease.

A) Siderosis B) Silicosis C) Asbestosis D) Fibrosis

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Answer & Solution

Answer: Option C

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