Q261
The determination of percentage of inflammable gas shall be made or sample of air taken at suitable point fixed by the manager on the . . . . . . . . side of first working place and as the . . . . . . . . sides of last working place in the district.
A.
Goaf, goaf
B.
Intake, return
AnswerC.
Stopping, airlock
D.
None
Answer: Option B
Solution
Answer: Option B
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