Mechanical Operations Mcqs for Chemical


Q.  To get ultrafine particles, the equipment used is a _________________?

a. Ball mill
b. Rod mill
c. Hammer crusher
d. Fluid energy mill


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  Which of the following relationships between co-efficient of friction (μ) between rock & roll and a (half of the angle of nip) of the particle to be crushed is correct ?
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MCQs:  For raschig rings, the sphericity is_____________________?
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MCQs:  In washing type plate and frame filter press, the ratio of washing rate to the final filtrate rate is__________________?
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MCQs:  Pine oil and Cresylic acid are used as ______________ in the froth floatation process?
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MCQs:  Energy requirement (per unit mass of material crushed/ground) is highest for__________________?
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MCQs:  Gold ore concentration is mostly done using___________________?
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MCQs:  Screw conveyors are________________?
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MCQs:  A suspension of glass beads in ethylene glycol has a hindered settling velocity of 1.7 mm/s, while the terminal settling velocity of a single glass bead in ethylene glycol is 17 mm/s. If the Richardson-Zaki hindered settling index is 4.5, the volume fraction of solids in the suspension is_____________?
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MCQs:  Power consumption during turbulent flow in agitation tank is proportional to the ______________ of the liquid?
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MCQs:  200 mesh screen means 200 openings per_____________________?
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MCQs:  Which of the following terminology is not used for size reduction of materials to fine sizes or powders ?
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MCQs:  The porosity of a compressible cake is _____________________?
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MCQs:  The most common filter aid is_________________?
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MCQs:  _______________ mill is normally used for grinding of talc?
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MCQs:  For achieving maximum capacity of the ball mill, the ball charge should be equal to about ______________ percent of the ball mill volume?
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MCQs:  Which of the following can be most effectively used for clarification of lube oil and printing ink ?
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MCQs:  Half the angle of nip, (α), for a roll crusher is given by (where, dr, dp and df are diameters of crushing rolls, feed particles and rolls gap respectively) ?
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MCQs:  Mixer used for rubber compounding is__________________?
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MCQs:  Froth floatation is the most suitable for treating ____________________?
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MCQs:  Which of the following must be stored in silos and not in open yard ?
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