Drilling And Blasting - Study Mode
[#376] Powdery explosives employed in
Correct Answer
(C) Dry places
[#377] Reversal of air current of natural ventilation, occurs.
Correct Answer
(D) In shallow mines during summer to winter
[#378] Which factor is important in sealing . . . . . . . .
Correct Answer
(C) Time
[#379] An explosion is accompanied by violence on . . . . . . . . scale.
Correct Answer
(D) Large
[#380] The coefficient of friction measured in . . . . . . . .
Correct Answer
(B) kilomurg