21. When the mineral has to be raised from two or more seams or two levels by the same mine the arrangement has to be made in intermediate seam called . . . . . . . .
22. Access in case of hilly terrain deposits.
23. The formula for BCF.
24. Shaft is made in
25. Progress of dint header may be upto . . . . . . . .
26. No working of gallery in gassy mine which has approached within . . . . . . . .m of known dyke, shall be extended to a distance of . . . . . . . .m from the nearest ventilation connections unless the air is coursed upto a point within . . . . . . . .m from the face.
27. The air quantities in m3/sec calculated in the splits A and B respectively are
28. The mixture of calcium hydroxide and caustic soda called . . . . . . . .
29. To supress dust to be air brone, apart from water, what else is sprayed to mixed with it.
30. What are the available delay numbers with copper tube only to be used with solid blasting?
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 6
- Drilling and Blasting - Section 8
- Drilling and Blasting - Section 9
- Drilling and Blasting - Section 10