Mechanical Operations Mcqs for Chemical


Q.  Soft & non-abrasive materials can be made into fines by________________________?

a. Attrition
b. Compression
c. Cutting
d. None of these


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  The specific surface of spherical particles is given by (where D and ρ are diameter and density of particle) ?
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MCQs:  Trommels are revolving screens which normally operate in the range of _______________ rpm?
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MCQs:  Filter aids like asbestos, kieselguhr, diatomaceous earth etc. are used to increase the porosity of the final filter cake & reducing the cake resistance during filtration. Filter aid is_______________?
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MCQs:  Ultracentrifuges running at speeds upto 100000 rpm is normally used for the_____________________?
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MCQs:  Maximum size reduction in a fluid energy mill is achieved by___________________?
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MCQs:  Which of the following is not a wet classifier ?
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MCQs:  Size reduction of fibrous materials like wood, asbestos, mica etc. is done by a disintegrator exemplified by the _________________?
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MCQs:  Specific surface area is the surface area of a unit _______________ of materials?
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MCQs:  Separation of a suspension or slurry into a supernatant clear liquid (free from particles) and a thick sludge containing a high concentration of solid is called__________________?
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MCQs:  If a force greater than that of gravity is used to separate solids & fluids of different densities, the process is termed as the __________________?
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MCQs:  The ratio of the actual mesh dimension of Taylor series to that of the next smaller screen is_______________?
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MCQs:  The energy consumed by a ball mill depends on__________________?
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MCQs:  Size reduction of asbestos and mica is done by____________________?
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MCQs:  In case of a hammer crusher, the final product size depends on the____________________?
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MCQs:  Tube mill compared to ball mill_______________________?
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MCQs:  Tabling process used for separating two materials of different densities by passing the dilute pulp over a table/deck, which is inclined from the horizontal surface at an angle of about________________?
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MCQs:  To get ultrafine particles, the equipment used is a _________________?
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MCQs:  Kick’s law assumes that the energy required for size reduction is proportional to the logarithm of the ratio between the initial and the final diameters. The unit of Kick’s constant is_________________?
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MCQs:  Filtration rate through a filter cake is proportional to (where, S = filtering surface R = specific cake resistance μ = viscosity of the filtrate) ?
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MCQs:  In continuous filtration (at a constant pressure drop), filtrate flow rate varies inversely as the__________________?
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