Drilling And Blasting - Study Mode

[#361] Flame safety lamp is used for testing.
Correct Answer

(C) CH 4

[#362] If in the mine gas emitted is a mixture of 80% CH 4 , 10% of H 2 , 10% of ethane, lower limit of explosibility of gas mixture will be
Correct Answer

(C) 4.6%

[#363] The fan which is more or less temporary installation in mines.
Correct Answer

(A) Axial flow fan

[#364] Access to a mineral deposit at a depth is by well called as
Correct Answer

(A) Pit

[#365] Trends now-a-days in approach mineral at a vertical depth of . . . . . . . . meters by inclines.
Correct Answer

(B) 200