531. Agitator is provided in a crystalliser for
Avoiding deposition on cooler surfaces
Formation of nuclei
Crystal growth
All of the above
✅ The correct answer is option D.
Mass Transfer MCQs
532. As the reflux ratio, in a continuous counter-current extraction is increased, the number of stages
Increase
Decrease
Remain unchanged
Can either increase or decrease, depends on the system
✅ The correct answer is option B.
533. Relative volatility does not change appreciably with the change in
Temperature
Vapour pressure of either component
Total pressure
None of these
✅ The correct answer is option A.
534. Critical humidity of a solid salt means the humidity
Above which it will always become damp
Below which it will always stay dry
Both A and B
Above Which it will always become dry and below which it will always stay damp
✅ The correct answer is option C.
535. Flooding in a column results due to
High pressure drop
Low pressure drop
Low velocity of the liquid
High temperature
✅ The correct answer is option A.
536. Molarity is defined as the number of gm moles of solute per __________ of solvent.
Litre
Kg
Gm
C.c
✅ The correct answer is option A.
537. Flash distillation is suitable for the separation of components
Having very close boiling points
Which form maximum boiling azeotrope
Having very wide boiling points
Which form minimum boiling azeotrope
✅ The correct answer is option C.
538. Diameter of raschig rings used in packed tower in industry is normally around __________ inches.
2
8
12
18
✅ The correct answer is option A.
539. Milk is dried usually in a __________ dryer.
Freeze
Spray
Tray
Rotary
✅ The correct answer is option B.
540. Make up water is required in a cooling tower to replace the water lost by
Evaporation
Drift
Blowdown and leakage
All of the above
✅ The correct answer is option D.