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Drilling and Blasting MCQs Questions & Answers | Mining Engineering

Learn and practice multiple-choice questions (MCQs) with answers related to Drilling and Blasting. These resources are available for mining engineering students who wish to clear GATE exams, technical interviews, competitive examinations, and other entrance exams. The Drilling and Blasting chapter is particularly important for students studying mining engineering. Page-8 section-1

Each section contains 100 MCQs on Drilling and Blasting .
71
If the velocity of air in a settling chamber is 0.3 m/s terminal velocity of the particle is 0.19 m/s then find out h/l ratio of chamber assuming eddy factor 0.5.
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Answer & Solution
Answer: Option A
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72
Use of alternative to explosives may prevent raising of dust.
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Answer: Option A
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73
Which drivage is cheaper and quicker.
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Answer: Option A
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74
Air velocities in smooth lined roads . . . . . . . . m/sec.
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Answer & Solution
Answer: Option B
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75
Which of the following statements is correct when presence of inflammable gas is detected in any place in a ventilating district?
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Answer & Solution
Answer: Option C
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76
In Jharia, fire near Londna and Fire area was prevented from spreading further by installing the fire area by
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Answer: Option C
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77
Where a shaft accommodates a pair of single cages, the diameter may be nearly.
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Answer: Option B
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78
Coal mines are said to be very steep; if the inclination is . . . . . . . .
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Answer: Option D
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79
An underground roadway through stone connecting two or more coal seams.
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Answer: Option D
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80
Drivage of roadway in coal in a mine, and their network reaches a predetermined boundary called a . . . . . . . .
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Answer: Option C
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