Q. The controlling resistance in a rotary drum vacuum filter is the __________ resistance.

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Q. Which of the following is used for primary crushing of very hard lumpy materials ?

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Q. Coal is finally pulverised to 200 mesh size for burning in boilers by a

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Q. Crushing efficiency is the ratio of the

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Q. The resistance offered by the filter used in a bag filter is proportional to (where, c = dust concentration, and s = particle size )

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Q. __________ mixer is used for devulcanisation of rubber scrap & making water dispersion & rubber solution.

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Q. Which of the following mechanical conveyors does not come under the division 'carriers' ?

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Q. Screen capacity is not a function of

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Q. Which of the following is a vacuum filter ?

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Q. Pine oil used in froth floatation technique acts as a/an

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Q. Cement clinker is reduced to fine size by a

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Q. The crushed material received for separation is called feed or

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Q. For spheres, volume shape factor is given by

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Q. Which of the following agitators having a large blade area, rotating at slow speed is used for mixing high viscosity liquids ( > 50000 centipoise) ?

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Q. __________ is defined as the geometric mean of the relative rejections and the relative recoveries of two minerals.

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Q. Maximum size reduction in a ball mill is done by the, __________ action.

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Q. increasing the capacity of a screen __________ the screen effectiveness.

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Q. The power number for a stirred tank becomes constant at high Reynolds number. In this limit, the variation of power input with impeller rotational speed (N) is proportional to

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Q. Bond crushing law

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Q. Flow of filtrate through the cake in a plate and frame filter press is best described by the __________ equation.

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