Oxygen flow rate in the self contained breathing apparatus Proto Mark IV is
A. 1 L/min
B. 1.5 L/min
C. 2 L/min
D. 2.5 L/min
Answer: Option C
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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