Which one of the following composition of methane in air is most explosive in nature?
A. 8.5% by volume
B. 9.5% by volume
C. 10.5% by volume
D. 11.5% by volume
Answer: Option B
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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