Mine Ventilation - Study Mode

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[#231] If hydrometer readings taken regularly to provide an indication weather or not . . . . . . . . taking place.

(A) cooling

(B) heating

(C) extinguish

(D) gas release

Correct Answer

(B) heating

[#232] The upper limit of inflammability of methane air mixture.

(A) 9

(B) 15

(C) 8

(D) 10

Correct Answer

(B) 15

[#233] Synonymous of carbon monoxide reffered as

(A) stink damp

(B) fire damp

(C) black damp

(D) white damp

Correct Answer

(D) white damp

[#234] The gas which imitates eyes and respiratory passages.

(A) H 2 S

(B) SO 2

(C) NO 2

(D) CO

Correct Answer

(B) SO 2

[#235] The atmospheric pressure measured by an instrument . . . . . . . .

(A) Barometer

(B) Humidity measure

(C) Thermo hygrometer

(D) Reken thermometer

Correct Answer

(A) Barometer