Mechanical Operations Mcqs for Chemical


Q.  Shell and leaf filter as compared to plate and frame filter _____________________?

a. Entails less labor cost
b. Facilitates filtration under higher pressure
c. Provides more effective washing
d. All A., B. & C.


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  Washability curve based on float and sink test enables an assessment to be made of the possibility of cleaning a coal fraction based on the____________________?
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MCQs:  In a ball mill, the volume occupied by the balls (when the mill is stopped) is about _______________ percent of the volume of the mill?
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MCQs:  Use of grinding aids results in the ___________________?
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MCQs:  ______________ are used for the separation of coarse particles from a slurry of fine particles?
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MCQs:  Size reduction of ice and gypsum can be accomplished suitably by a _______________ crusher?
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MCQs:  Pick out the wrong statement ?
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MCQs:  Gyratory crushers compared to the reciprocating jaw crushers__________________?
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MCQs:  Separation of solid suspended in liquid into a supernatant clear liquid and a denser slurry employs a process termed as the___________________?
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MCQs:  In case of a ball mill ?
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MCQs:  The filtrate flow rate in constant pressure filtration___________________?
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MCQs:  Activators are those chemicals which help buoying up one mineral in preference to the other in the froth floatation process. Which of the following is an activator ?
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MCQs:  In filtration, the use of ‘filter aid’ helps in__________________?
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MCQs:  Which of the following oxides is not present in hematite iron ore ?
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MCQs:  The value of work index does not change materially from one equipment to another. If the value of work index determined for close circuit grinding is Wi, then the same for open circuit grinding will be_________________?
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MCQs:  Dispersion of a gas through liquid is done by using a__________________?
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MCQs:  For transporting pasty material, one will use a/an__________________?
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MCQs:  Which of the following is not used as a surface active agent in a flocculation operation ?
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MCQs:  Work index is the gross energy (kWh/tonne of feed) necessary to reduce a very large feed to such a size that 80% of product particles will pass through a 0.1 mm screen. The value of work index determined for wet grinding should be multiplied with ______________ to get the same for dry grinding?
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MCQs:  A straight line is obtained on plotting reciprocal of filtration rate vs. the volume of filtrate for _______________ flow of filtrate?
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MCQs:  Sphericity for a non-spherical particle is given by (where, V and S are volume and surface area respectively of one particle. and, D = equivalent diameter of particle)?
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