Q. The ratio of the area of openings in one screen (Taylor series) to that of the openings in the next smaller screen is

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Q. Compressibility co-efficient for an absolutely compressible cake is

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Q. __________ baffles are provided in ball mills.

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Q. Mixer used for rubber compounding is

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Q. For spheres, the specific surface shape factor is given by

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Q. __________ mill is not used for grinding wheat into flour and for milling of cereals & other vegetable products.

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Q. In case of a hammer crusher, the final product size depends on the

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Q. Sedimentation on commercial scale occurs in

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Q. With increase in drum speed, in a rotary drum filter, the filtration rate

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Q. Arrange the following size reduction equipment in the decreasing order of the average particle size produced by each of them.

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Q. 200 mesh seive size corresponds to __________ microns.

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Q. What is the usual value of angle of nip for crushing of ordinary rock in smooth steel crushing rolls ?

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Q. Wet grinding in a revolving mill __________ as compared to dry grinding.

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Q. The grinding in a hammer crusher takes place due to the

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Q. A compressible cake has the

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Q. Which of the following is not used as a filter medium in case of corrosive liquids ?

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Q. In ball mill operation, the feed size (Df in meters) and the ball diameter (Db in metres) are related as ( where, K = grindability constant (varying from 0.9 to 1.4 in increasing order of hard ness))

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Q. Pine oil and cresylic acid are used as __________ in the froth floatation process.

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Q. Grinding characteristic of a material is given by its

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Q. Which of the following is not a non-metalliferous mineral?

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