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Chemical Engineering · all questions

Mechanical Operations
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Length/diameter ratio of a ball mill is

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The optimum moisture content in solids to be crushed/ground ranges from __________ percent.

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Apron conveyors are used for

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Carbon black is pulverised in a

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Size reduction of moulding powders, waxes, resins & gums are done in a __________ mill.

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Ball mills and tube mills with flint or porcelain balls are used for size reduction of

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Shell and leaf filter as compared to plate and frame filter

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As particle size is reduced

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In case of grinding in a ball mill

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

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Which of the following is a batch sedimentation equipment?

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The most suitable filter for the removal of very small amount of precipitate from very large volumes of water is the __________ filter.

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The main size reduction operation in ultrafine grinders is

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Which of the following is not accomplished by agitation of liquids in agitators?

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__________ centrifuge is the most suitable for separation of non-friable crystals.

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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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The material is crushed in a gyratory crusher by the action of

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Filtrate flow rate in case of a rotary drum vacuum filter (in which Rm << Rc) is proportional to __________ and the cycle time (where, = filtrate viscosity, Rm = filter medium resistance, Rc = cake resistance ).

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Ball mill is used for

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Basic slag is not ground in

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