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

Accepted Answer

The primary disadvantage of a Silverson emulsifier is the clogging of pores of the mesh, which can hinder the mixing process and reduce efficiency.

Question 2

Hormones, antibiotics & enzymes are:
A)Heat-sensitive
B)Cold-sensitive
C)Volatile
D)None of these

Accepted Answer

Hormones, antibiotics, and enzymes are heat-sensitive, meaning their structure and function can be adversely affected or denatured by high temperatures.

Question 3

Greater the surface area of the liquid, the evaporation will be:
A)Slow
B)Greater
C)Not affected
D)Both (a) & (b)

Accepted Answer

Evaporation increases with an increase in the surface area of the liquid, as more molecules are exposed to the air, allowing more molecules to escape into the atmosphere.

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

Accepted Answer

The answer of The following Equipment is best for evaporating...

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

Accepted Answer

Vertical Tube evaporator is used to manufacture cascara extract, sugar, salt, caustic soda etc.

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

Accepted Answer

Short Tube Evaporator is also known as Vertical Tube 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

Accepted Answer

Entrainment separator is part of Climbing Film Evaporator. It is used to separate the entrained liquid droplets from the vapor stream.

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

Accepted Answer

Falling Film Evaporators are suitable for high-viscosity feeds because the liquid film moves under gravity, which helps in the efficient heat transfer for viscous fluids.

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

Accepted Answer

Forced Circulation Evaporators work on the principle of pumping or creating pressure to circulate the liquid being concentrated through the evaporator. This method is used to handle viscous fluids or liquids with suspended solids that might otherwise cause fouling or scaling in other types of evaporators.

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

Accepted Answer

Vertical Tube Evaporators can be modified into multiple effect evaporators, as they are commonly used in industries for this purpose due to their design and efficiency in handling large volumes of liquid.

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

Accepted Answer

The feed liquid in a distillation process is called the distilland. This term specifically refers to the liquid that is to be distilled.

Question 12

In which process, concentrated liquid remains as final product?
A)Distillation
B)Evaporation
C)Crystallization
D)Drying

Accepted Answer

Evaporation is the process where the solvent evaporates, leaving the solute as a concentrated liquid.

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

Accepted Answer

Ideal Solutions are those in which the components mix without any change in their chemical or physical properties, except for dilution effects.

Question 14

The correct equation/Expression of Dalton's Law is: A)p_A = p_A X_A, p_B = po _BX_B B)P = p_A + p_B C)p_A = Y_A.P, p_B = Y_B.P D)None of the above

Accepted Answer

Dalton's Law of Partial Pressures states that the total pressure exerted by a mixture of gases is equal to the sum of the partial pressures of individual gases in the mixture. Option B correctly simplifies this principle, indicating the total pressure (P) is the sum of the partial pressures of gas A and gas B.

Question 15

Differential Distillation is also known as:
A)Simple Distillation
B)Fractional Distillation
C)Molecular Distillation
D)Steam Distillation

Accepted Answer

Differential distillation is another term for simple distillation, which is a technique used to separate components of a mixture based on differences in boiling points.

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

Accepted Answer

The answer of Which process is widely used to obtain...

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

Accepted Answer

Flash distillation involves suddenly vaporizing the liquid mixture by reducing the pressure, which distinguishes it from the other types of distillation listed.

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

Accepted Answer

Fractional distillation involves the condensation of vapor and its return as liquid to the system, which helps in achieving separation based on differences in boiling points.

Question 19

Absolute alcohol can be prepared by which method?
A)Molecular Distillation
B)Azeotropic Distillation
C)Fractional Distillation
D)Steam Distillation

Accepted Answer

Azeotropic distillation is used to break the azeotrope between alcohol and water, allowing for the production of absolute alcohol by removing the remaining water.

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

Accepted Answer

The answer of Which process is based on the principle...

Quiz 4: Evaporation and Distillation Techniques

In silverson emulsifier, what is the only disadvantage?

Hormones, antibiotics & enzymes are:

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

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

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

Vertical Tube evaporator is also known as:

Entrainment separator is part of which evaporator?

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

Evaporator working on basis of Pump or pressure:

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

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?

In which process, concentrated liquid remains as final product?

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?

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

Differential Distillation is also known as:

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

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:

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

Absolute alcohol can be prepared by which method?

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