The relative rates of disfusion of number of gases vary inversely as square root of their relative densities called
A. Boyle's law
B. Charle's law
C. Combined law
D. Graham's law of diffusion
Answer: Option D
A. Boyle's law
B. Charle's law
C. Combined law
D. Graham's law of diffusion
Answer: Option D
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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