51. In a mine all signalling bells, telephones exploders and relays are . . . . . . . . safe construction.
52. Air screw fan is more suited for low w.g and high . . . . . . . .
53. It is important factor of explosive when selecting an explosive for a perticular use.
54. The Origin of the formation of coal is . . . . . . . .
55. Air lock consists of . . . . . . . . doors.
56. All bright coals with 25% more V.M and 7 to 15% of moisture are prone to
57. The breathing bag of proto mark IV apparatus, which serves as . . . . . . . .
58. Every electrical shot-firing apparatus shall be so constructed that the firing circuit is made or broken automatically by means of which of the following?
59. Push botton type bye pass valve fitted in proto . . . . . . . .
60. Resistance of a road way is
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 6
- Drilling and Blasting - Section 7
- Drilling and Blasting - Section 8
- Drilling and Blasting - Section 9
- Drilling and Blasting - Section 10