Mine Ventilation - Study Mode

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[#131] How many tests for gases are made before blasting in gassy mine.

(A) 2

(B) 4

(C) 1

(D) 3

Correct Answer

(D) 3

[#132] The specific gravity of oxygen is

(A) 1.2

(B) 1.1

(C) 0.967

(D) 0.553

Correct Answer

(B) 1.1

[#133] The pressure measuring instrument used in certain types of ventilation surveys is

(A) barometer

(B) fortin barometer

(C) aneroid barometer

(D) hydrometer

Correct Answer

(C) aneroid barometer

[#134] 100 vols. of water disolving CO 2 at 15°C . . . . . . . . vol. of CO 2 .

(A) 80

(B) 60

(C) 90

(D) 100

Correct Answer

(D) 100

[#135] When methane burns in air this produces

(A) CO + CO 2

(B) CO 2 + H 2 O

(C) CH 4 + CO 2

(D) CO + CH 4 + H 2 O

Correct Answer

(B) CO 2 + H 2 O