Mine Ventilation - Study Mode

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[#361] DGMS has approved this type for use for all degree of gassy mines in coal.

(A) Velog GL5

(B) Velox GL60

(C) Veiox GL10

(D) None

Correct Answer

(C) Veiox GL10

[#362] Name the gas which is not dangerous

(A) CO 2

(B) CO

(C) CH 4

(D) SO 2

Correct Answer

(D) SO 2

[#363] The liquid employed in Fortin barometer

(A) water

(B) alchohol

(C) petrol

(D) mercury

Correct Answer

(D) mercury

[#364] The alarm range of BCO-1 CO detector . . . . . . . . of CO.

(A) 10 - 200 ppm

(B) 5 - 200 ppm

(C) 0 - 150 ppm

(D) 0 - 200 ppm

Correct Answer

(A) 10 - 200 ppm

[#365] What is the minimum % of methane concentration a oil safety lamp can measure.

(A) 0.5%

(B) 1.0%

(C) 1.5%

(D) 3%

Correct Answer

(C) 1.5%