Evaporation MCQs with Answer
Subject:- PHARMACEUTICAL ENGINEERING
1️⃣ In equation Q=UA ∆t, U is heat transfer coefficient and its unit are:
A. W/(m^2)K
B. W/m (K^2)
C. (m^2) X/W
D. m (K^2)/W
2️⃣ Choose the sentence correct for evaporation:
A. Constituent must be thermolabile
B. Liquid must be viscous
C. Solvent must be non volatile
D. Solvent must be volatile
3️⃣ Factor increasing efficiency of evaporators:
A. Moisture content
B. Volume of liquid
C. Viscosity flow
D. Viscosity of liquid
4️⃣ Which factor does not influence the rate of evaporation
A. Difference in vapour pressure
B. melting point of solids
C. Surface area of evaporator
D. viscosity of the solution
5️⃣ In climbing film evaporator the problem in evaporation is
A. Boiling point of liquid
B. Entrainment of liquid
C. Droplet formation
D. Film formation
6️⃣ Which type of equipment gives porous on evaporation?
a) film evaporator
b) multiple effect evaporator
c) open pen evaporator
d) Vacuum evaporator
7️⃣ Which evaporator is used to concentrate insulin, liver extract and vitamins
a) climbing film evaporator
b) falling film evaporator
c) Horizontal tube evaporator
d) none of the above
8️⃣ Which factor does not influence rate of evaporation
A) difference on vapour pressure.
b) melting point of solids
c) surfact area of evaporator
d) viscosity of the solution
9️⃣ In climbing film evaporator, the problem in evaporation is
a) Boiling point of liquid
b) Droplet formation
c) Entrainment of liquid
d) Film formation
???? Which conditions of evaporation is used for the production of salt extract?
a) Atmospheric pressure
b) High pressure
c) Normal pressure
d) Reduce pressure
Answers
1. A(W/m^2)K
2. D(Solvent must be volatile)
3. C (Viscosity flow)
4. B(melting point of solids)
5. B(Entrainment of liquid)
6. D(Vacuum evaporator)
7. A( Climbing film evaporator)
8. B(melting point of solids)
9. C (Entrainment of liquid)
10. D(Reduce pressure)
