51. The complete weight of Novex reviving apparatus is . . . . . . . . Kgs.
52. The isolation stoppings should be well locked into the roof, floor, sides the minimum depth of locking should be shale.
53. When O2 falls to 10% or low and CH4 rises to 16% or more in fire stopping the samples collected at intervals of . . . . . . . .
54. The Manager while fixing maximum number of shots to be fired by the Shotfirer in a shift consider some important issues or parameters. Which of the below mentioned issue or parameter is not considered?
55. A person inhales . . . . . . . . l/min, the O2 consumption . . . . . . . . l/min, when walking with load.
56. The person engaged on drifting work were on the principle of . . . . . . . .
57. In smoke helmet/hose mask these apparatus the wearer to depend upon the other man for supply of . . . . . . . ., the wearer himself working in irrespirable air.
58. The explosive in sinking shaft is mainly carried out by . . . . . . . .
59. CO2 gas type extinguishers are used quench . . . . . . . . type fires.
60. Shale pieces in contact with coal are known to . . . . . . . . spontanious heating.
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