Which can be found by blotting paper soaked in lead acetate changes its colour black.
A. SO2
B. H2
C. H2S
D. CH4
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
Join The Discussion