40% of black damp (60% air i.e. 12% O2 and 5% CO2) physiological effect on human body is . . . . . . . .
A. frequent deeper breathing
B. headache
C. panting
D. nasia
Answer: Option A
This Question Belongs to Mining Engineering >> Mine Ventilation
Related Questions on Mine Ventilation
The mechanical mixture of gases existing in a mine given off after explosion called
A. White damp
B. Stink damp
C. Black damp
D. After damp
A Drager Gas Mask does not filter
A. Water vapour
B. Nitrous fumes
C. Carbon monoxide
D. Carbon dioxide
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