21. The explosive which produce flame of long duration after blasting, burning particles remain contact with surround atmosphere
22. Permitted limit of speed of blade tips near the residential areas in axial flow fan . . . . . . . . in m/min.
23. Metallic powders in explosive composition act as . . . . . . . .
24. Which of the following agent is used to give sheath in a permitted sheathed explosive?
25. Cordtex fuse fired by . . . . . . . .
26. Hopacalite used as
27. The detonator inserted in explosive cartridge called
28. Surface screening plants and tipplers should be atleast . . . . . . . . away from the intake shaft.
29. It is the ability of coal dust to cause a flame to spread away from source of ignition called . . . . . . . .
30. The instrument to determine the distance travelled by air in a given time 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