41. Face along the strike prefarable for stowing in seams dipping more than. A. 1 in 5 B. 1 in 4 C. 1 in 3 D. 1 in 12 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
42. The water garland segments provided with outlet hole into which screwed a nipple for . . . . . . . . mm diameter drain pipe A. 25mm B. 35mm C. 50mm D. 75mm Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
43. For retreating L/W and B. P workings, only suitable method of methane drainage is A. Pack cavity method B. Cross measure bore hole method C. Hirch back method D. None Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
44. No. of drills employed in shaft sinking A. 1 drill B. 2 - 3 drills C. 3 - 4 D. 5 drill Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
45. In India coal seams over . . . . . . . . m thick are considered as thick seams. A. 4.5m B. 4.9m C. 5.2m D. 5.8m Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
46. Top most horizon of tertiary succession in Assam is known as A. Surma series B. Barail series C. Jaintia series D. Dining series Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
47. How many coal seams belong to Barakar formation A. 16 B. 17 C. 18 D. 19 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
48. Drill rods made of A. Carbon steel B. Cast steel C. Cast iron D. Steel Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
49. The width of the rooms in room and pillar method may be A. 4 - 6m B. 5 - 7m C. 6 - 9m D. 8 - 10m Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
50. The tunneling machine employed in hard rock should be A. Plunger type B. Pusher type C. Ripper type D. Borer type Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board