41. If the depth of workings of coal mine below 200 m said to be . . . . . . . .
42. The relation between size of coal and total methane gas content emitted at face.
43. Water CO2 extinguishers suitable only for quency of . . . . . . . .
44. An explosive used in underground mines has to be
45. The fan is more or less permanent installation
46. If the resistance of a roadway 50 m long, 6 m3 cross section being equal to . . . . . . . . kilo murg.
47. A detonating fuse like cordtex is generally used in
48. In inclined manometer, alchohol prefered due to
49. How much time to be taken to enter in a place, where electric blasting done.
50. In a mine ventilation district of deg. II and deg. III, percentage of CH4 exceeds 1.25 at any time the electric supply should be . . . . . . . .
Read More Section(Drilling and Blasting)
Each Section contains maximum 100 MCQs question on Drilling and Blasting. To get more questions visit other sections.
- Drilling and Blasting - Section 1
- Drilling and Blasting - Section 2
- Drilling and Blasting - Section 3
- Drilling and Blasting - Section 4
- Drilling and Blasting - Section 5
- Drilling and Blasting - Section 7
- Drilling and Blasting - Section 8
- Drilling and Blasting - Section 9
- Drilling and Blasting - Section 10