11. If the gas emission in a mine is very high as may some. times occur in very deep mines, it is a safe practice to substitute electric power supply by . . . . . . . .
12. Heat produced by human being through the process of . . . . . . . .
13. The weight of self contained breathing apparatus of proto marks V . . . . . . . . of 2 hour duration in kg.
14. The quantity survey can be made in gassy mines of III degree once in every . . . . . . . . days.
15. Face pump h.p varies from
16. Spraying the surface of stoping with liquid cement sand mixture ratio 3 : 1 called
17. Identify the odd out if the lot.
18. Saylor's classification is based on . . . . . . . .
19. Taking the air to the lower point of the district and allow to travel to higher levels to ventilate the district or faces before goes to return . . . . . . . .
20. Which explosive is blasted by safety fuse.
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