Mechanical Operations Mcqs for Chemical


Q.  Which of the following can be most effectively used for clarification of lube oil and printing ink ?

a. Sparkler filter
b. Pre-coat filter
c. Disc-bowl centrifuge
d. Sharpies super-centrifuge


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  Ultra centrifuges are used for the separation of _____________ solid particles?
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MCQs:  Sizing of very fine particles of the order of 5 to 10 microns is done by elutriation, which is a _____________ operation?
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MCQs:  Run of mine (ROM) coal is crushed by a _________________________ for use in domestic ovens?
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MCQs:  A sand mixture was screened through a standard 10-mesh screen. The mass fraction of the oversize material in feed, overflow and underflow were found to be 0.38, 0.79 and 0.22 respectively. The screen effectiveness based on the oversize is_________________?
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MCQs:  ____________ conveyor is the most suitable for long distance transportation of cold, nonabrasive granular/irregular shape/fine materials?
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MCQs:  ____________ mills fall in the category of tumbling mills ?
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MCQs:  Pulverised coal passing through 200 mesh screen has a diameter of 0.074 mm (74 micron). The same passing through 50 mesh screen will have a dia of ____________ mm?
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MCQs:  For Indian standard (IS) screens, the mesh number is equal to its aperture size expressed to the nearest deca-micron (0.01 mm). Aperture width of IS screen of mesh number 50 will be approximately _____________ microns?
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MCQs:  Which of the following is not categorised as a “mechanical operation”?
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MCQs:  Grinding characteristic of a material is given by its___________________?
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MCQs:  Ball mills and tube mills with flint or porcelain balls are used for size reduction of_______________?
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MCQs:  Gravity settling process is not involved in the working of a________________?
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MCQs:  With increase in drum speed, in a rotary drum filter, the filtration rate_______________?
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MCQs:  Mixing of plastic solids is generally facilitated by___________________?
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MCQs:  The main size reduction operation in ultrafine grinders is_____________?
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MCQs:  Which of the following is not used as a filter medium in case of corrosive liquids?
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MCQs:  Which of the following is a pressure filter ?
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MCQs:  200 mesh sieve size corresponds to _____________ microns?
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MCQs:  Which of the following mineral dressing operations is termed as ‘comminution’?
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MCQs:  Which of the following is not an industrial screening equipment ?
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