⛑️ Mining Safety MCQ Questions - Part 03
31. The main cause of mine fires in coal mines is:
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Answer: B. Spontaneous heating of coal
32. The best firefighting agent for coal mine fire is:
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Answer: C. Inert gases (N2/CO2)
33. Which type of fire extinguisher is used for electrical fires?
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Answer: C. CO2 type
34. A major precaution while handling explosives in mines is:
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Answer: B. Keep away from fire/heat
35. The statutory distance between explosive magazine and building is at least:
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Answer: D. 180 m
36. Permitted explosives are used in gassy mines because:
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Answer: B. Produce minimal flame & sparks
37. Blasting in fiery seams is generally done with:
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Answer: B. Permitted explosives and detonators
38. Use of PPE in mines is governed by:
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Answer: B. Mines Act & DGMS guidelines
39. Safety helmets in underground mines must have:
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Answer: D. All of the above
40. The effectiveness of dust respirators depends mainly on:
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Answer: A. Mask fitting/leakage
41. Anemometer in mine safety is used to measure:
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Answer: B. Air velocity
42. Shotfirer in mining is responsible for:
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Answer: B. Blasting operations as per safety code
43. Detonators must be stored:
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Answer: B. Separately in approved magazine
44. PPE for eyes during drilling/blasting operations is:
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Answer: B. Proper safety goggles
45. Accidents are best prevented in mines by:
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Answer: B. Safety training & continuous awareness
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