Drilling And Blasting - Study Mode
[#251] The quantity survey can be made in gassy mines of II degree once in every . . . . . . . . days.
Correct Answer
(D) 30
[#252] In smoke generator for measuring air velocity the time taken by the smoke to travel . . . . . . . . m recorded.
Correct Answer
(C) 8 - 10 m
[#253] Primex is a mixture of
Correct Answer
(A) PETN and TNT
[#254] Pyrolusite is used in
Correct Answer
(B) Manufacture of cell battery
[#255] The choice of site of an incline is limited to . . . . . . . . region.
Correct Answer
(C) Outcrop