Deck 4: Evaporation and Distillation Techniques

Question 1

In silverson emulsifier, what is the only disadvantage?

A)Poor Mixing
B)Clogging of pores of the mesh
C)Separation
D)Size reduction

Answer 1

Clogging of pores of the mesh

Question 2

Hormones, antibiotics & enzymes are:

A)Heat-sensitive
B)Cold-sensitive
C)Volatile
D)None of these

Answer 2

Heat-sensitive

Question 3

Greater the surface area of the liquid, the evaporation will be:

A)Slow
B)Greater
C)Not affected
D)Both (a) & (b)

Answer 3

Greater

Question 4

The following Equipment is best for evaporating concentrated aqueous and thermostable liquors:

A)Horizontal Tube evaporator
B)Triple effect evaporator
C)Climbing Film Evaporator
D)Evaporating Pan

Question 5

Evaporator used to manufacture cascara extract, sugar, salt, caustic soda etc:

A)Vertical Tube evaporator
B)Triple effect evaporator
C)Climbing Film Evaporator
D)None of these

Question 6

Vertical Tube evaporator is also known as:

A)Horizontal Tube evaporator
B)Basket type evaporator
C)Short Tube Evaporator
D)Rising Film Evaporator

Question 7

Entrainment separator is part of which evaporator?

A)Climbing Film Evaporator
B)Triple effect evaporator
C)Horizontal Tube Evaporator
D)Evaporating Pan

Question 8

When the feed is high viscosity, following evaporator should be used:

A)Climbing Film Evaporator
B)Falling Film evaporator
C)Horizontal Tube Evaporator
D)Short Tube evaporator

Question 9

Evaporator working on basis of Pump or pressure:

A)Climbing Film Evaporator
B)Triple effect evaporator
C)Horizontal Tube Evaporator
D)Forced Circulation Evaporator

Question 10

Which evaporator can be modified to Triple effect Evaporator/ Multiple effect evaporator?

A)Vertical Tube Evaporator
B)Forced Circulation evaporator
C)Horizontal Tube Evaporator
D)None of the above

Question 11

In distillation process is the separation of the components of a liquid mixture by process involving vaporization and subsequent condensation at another place. What is the feed liquid called?

A)Distillate
B)Condensate
C)Distilland
D)None of the above

Question 12

In which process, concentrated liquid remains as final product?

A)Distillation
B)Evaporation
C)Crystallization
D)Drying

Question 13

Solution in which there is no change in the properties of the components other than dilution, when they are mixed to form a solution is known as?

A)Ideal Solution
B)Real Solution
C)Fake Solution
D)Partial Solution

Question 14

The correct equation/Expression of Dalton's Law is:

A)p_A = p_A X_A, p_B = po _B X_B
B)P = p_A + p_B
C)p_A = Y_A.P, p_B = Y_B.P
D)None of the above

Question 15

Differential Distillation is also known as:

A)Simple Distillation
B)Fractional Distillation
C)Molecular Distillation
D)Steam Distillation

Question 16

Which process is widely used to obtain Water for Injection/Purified Water?

A)Steam Distillation
B)Fractional Distillation
C)Simple Distillation
D)All of the above

Question 17

A process in which the entire liquid mixture is suddenly vaporized by passing the feed from a high pressure zone to a low pressure zone:

A)Simple Distillation
B)Fractional Distillation
C)Steam Distillation
D)Flash Distillation

Question 18

In which process a part of the vapor is condensed and returned as liquid?

A)Fractional Distillation
B)Molecular Distillation
C)Steam Distillation
D)Simple Distillation

Question 19

Absolute alcohol can be prepared by which method?

A)Molecular Distillation
B)Azeotropic Distillation
C)Fractional Distillation
D)Steam Distillation

Question 20

Which process is based on the principle of Simple Distillation with some modifications?

A)Fractional Distillation
B)Steam Distillation
C)Distillation under reduced Pressure
D)None of these

Question 21

Double neck Distillation Flask is known as?

A)Claisen Flask
B)Round Bottom Flask
C)Florentine Flask
D)None of the above

Question 22

High Boiling liquids cannot be purified by simple distillation, since the constituents in the mixture tend to_________________ at higher temperatures.

A)Loose moisture
B)Decompose
C)Become Volatile
D)None of the above

Question 23

Which process is also known as Short-Path Distillation?

A)Simple Distillation
B)Fractional Distillation
C)Steam Distillation
D)Molecular Distillation

Question 24

Talc has equilibrium Moisture Content (EMC) of practically:

A)One
B)Zero
C)Variable
D)High

Question 25

Which of the following type of product is having equilibrium moisture content (EMC) of practically Zero?

A)Non-Porous & Insoluble
B)Non-Porous & Soluble
C)Porous & Insoluble
D)Porous & Soluble