21. The CO2 absorbent placed in breathing bag, weights of absorbent is . . . . . . . .
22. The road header machines are capable of cutting rock which are not . . . . . . . .
23. Cordex is a
24. Class 'B' fires involve liquids generally quenched by . . . . . . . .
25. Oxygen gas liquifies at . . . . . . . .
26. Safe working velocity should not exceed at places where carbide lamps used . . . . . . . .
27. In hosemask, a currugated tube between the mask and air tube or rubber . . . . . . . .
28. These type of explosives not used in under ground coal mines.
29. The temporary stoping have to be buitt in places which are free from . . . . . . . . movements and cracks.
30. Every mine should have at least.
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 2
- Drilling and Blasting - Section 3
- Drilling and Blasting - Section 4
- Drilling and Blasting - Section 5
- 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