Mechanical Operations Mcqs for Chemical


Q.  Separation of particles of various sizes, shapes and densities by allowing them to settle in a fluid is called__________________?

a. Classification
b. Froth floatation
c. Thickening
d. Clarification


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  Fluid energy mill comes in the category of________________?
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MCQs:  Molten ammonium nitrate is mixed with ground limestone in fertilizer plant in a__________________?
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MCQs:  Wheat is ground into flour in a___________________?
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MCQs:  Pick out the material having minimum Rittinger’s number?
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MCQs:  About 2-3 hp, power per gallon of a thin liquid provides vigorous agitation in an agitator. ‘Power number’ in agitation is given by __________________?
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MCQs:  A filter press is___________________?
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MCQs:  The crushed material received for separation is called feed or_________________?
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MCQs:  ______________ mill is not a revolving mill ?
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MCQs:  Which of the following equations is Rittinger’s crushing law? (Where P = power required by the machine, m = feed rate, k = a constant, D̅ sa & D̅ sb = volume surface mean diameter of feed & product respectively) ?
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MCQs:  For coarse reduction of hard solids, use ____________________?
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MCQs:  _____________ mills are termed as impactors?
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MCQs:  During the washing of cake_________________?
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MCQs:  For laminar flow of filtrate through the cake deposited on septum, which of the following will be valid ?
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MCQs:  Feed size of ≥ 25 cms can be accepted by _______________________?
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MCQs:  In a grinding operation, the limiting particle size is the size of the _______________ particle in the sample?
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MCQs:  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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MCQs:  Which of the following is a continuous filter ?
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MCQs:  In case of a revolving mill, wet grinding compared to dry grinding__________________?
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MCQs:  The opening of a 200 mesh screen (Taylor series) is__________________?
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MCQs:  Rittinger’s crushing law states that_____________________?
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