Mine Ventilation - Study Mode

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[#156] What are the sources which contributes the moisture content of mine air.

(A) persipration of men

(B) wet road ways

(C) wet cutting

(D) all of these

Correct Answer

(D) all of these

[#157] To combat fire in goaf the following as introduced

(A) SO 2

(B) H 2

(C) CO 2

(D) N 2

Correct Answer

(D) N 2

[#158] The sp.gr of nitrogen.

(A) 0.553

(B) 0.967

(C) 1.1

(D) 1.2

Correct Answer

(B) 0.967

[#159] The poisonous gas is . . . . . . . .

(A) O 2

(B) CO 2

(C) CO

(D) CH 4

Correct Answer

(C) CO

[#160] Multi gas detector manufactured by the company.

(A) Siber German

(B) Drager

(C) MSA

(D) ECOR

Correct Answer

(B) Drager