For a person working in an atmosphere containing 21% O2, the exhaled air contains 4.5% CO2 and 16% O2. The respiratory quotient of breathing is
A. 0.21
B. 0.9
C. 0.28
D. 1.11
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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