Mechanical Operations Mcqs for Chemical

Q.  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 ?

a. Cresylic acid
b. Copper sulphate
c. Calcium carbonate
d. Sodium carbonate


ANSWER: See Answer
 
No explanation is available for this question!
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MCQs:  _____________ is the most suitable for compounding rubber and plastic solids ?
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MCQs:  During filtration operation, the filtrate encounters the resistance of the ___________________?
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MCQs:  To get a fine talc powder from its granules, the equipment used is____________________?
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MCQs:  The controlling resistance in a rotary drum vacuum filter is the ________________ resistance?
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MCQs:  Theoretical capacity of crushing rolls in tons/hr is given by (where, V = peripheral velocity, m/sec. W = width of rolls, m Dr = distance between rolls ρ = density of material to be crushed, kg/m3 here, V =πND where, N = speed of the rolls in rotation per second (rps) D = diameter of rolls, m) ?
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MCQs:  In a size reduction crushing operation, the feed size is 10 to 50 mm, while the product size is 2 to 10 mm. This is a case of _______________ crushing?
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MCQs:  A fluid energy mill is used for __________________?
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MCQs:  Reciprocating screens are normally inclined at an angle of 5° with the horizontal and employ gyratory motion at feed end & reciprocating motion at the discharge end. They are not suitable for the screening of the ___________________?
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