Mining Engineering
GATE MN format:mcq PYQs
Build your understanding with focused practice from past exam papers.
Questions 321–330 of 348. Imported answers require independent review unless marked reviewed.
Question 10
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Minerals A and B are produced from a deposit. Minerals A and B will be called coproducts if
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Semi-variogram modeling is used for reserve estimation of mineral deposit by
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Which one of the following does NOT belong to the direct operating cost of a mine?
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Lane's algorithm is applied to determine
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In an underground coal mine a driller, wearing personal protective equipment, was going to workplace along the traveling roadway. A piece of rock fell down from the roof and hit the person on head causing serious injury. The cause of accident is
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In a PERT network, the “time estimates” of an activity are the following: Optimistic time - 2 days, Most likely time - 4 days, and Pessimistic time - 12 days. The expected time and standard deviation of the activity in days are respectively
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A vertical photograph of a 40 m high hill is taken from 4.4 km height. If the focal length of the camera is 15 cm, the scale of the photograph is ________
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A deeply seated ore body dips at 70° having an average width of 60 m. The ore body, hanging wall, and footwall are competent. The suitable stoping method for this ore body is
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The results of the crossing point temperature experiments for coal A and B are shown in the figure.
The correct interpretation of the plot is that
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The “yellow boy” formed due to acid mine drainage mainly consists of
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