Deck 3: Distillation, Size Reduction and Mixing Equipment

Question 1

The distilled water is collected in _________.

A)Receiver
B)Adapter
C)Condenser
D)Round Bottom Flask

Answer 1

Receiver

Question 2

Which of the following is not a step in process of distillation?

A)Condensation
B)Heating
C)Precipitation
D)Vaporization

Answer 2

Precipitation

Question 3

Calendria consists of no. of

A)Baffles
B)Jacket
C)Tubular surfaces
D)None of these

Answer 3

Tubular surfaces

Question 4

Source of heat in most of the evaporator:

A)Coal
B)Steam
C)Hot water
D)Oil bath

Question 5

Solar water heaters, solar cookers, microwave ovens, microwave cookers, sonicator baths etc., are examples of which type transfer of heat mechanism?

A)Conduction
B)Radiation
C)Convection
D)None of these

Question 6

Following factor does NOT influence film coefficient:

A)Thermal conductivity of the liquid
B)Specific heat of the film
C)pH of the liquid
D)Density of the liquid

Question 7

When fluid is heated, the currents set up may cause mixing of fluid. Such heat transfer is known as:

A)Forced Convection
B)Natural Convection
C)Conduction
D)None of these

Question 8

Which is NOT a Mode of Size Reduction?

A)Cutting
B)Compression
C)Vaporization
D)Attrition

Question 9

Following is the example of hammer mill used in Pharmaceutical Industry:

A)Fitzpatrick comminuting machine (Fitz mill)
B)Hardinge Mill
C)Centrifugal impact pulverizer
D)None of these

Question 10

E = K_R (S_n - S_i ) belongs to which law/Theory?

A)Bond's theory
B)Lacey Theory
C)Kick's Theory
D)Rittinger's Theory

Question 11

Bond's work Index is the work required to reduce a unit weight from a theoretical infinite size to 80% passing ______µm.

A)10
B)100
C)25
D)None of these

Question 12

A powder, all the particles of which pass through sieve no. 44 is called?

A)Coarse powder
B)Moderately fine powder
C)Fine powder
D)Very fine powder

Question 13

Herringbone screen recommends use of which type of material for separation?

A)Slurries
B)Fibrous materials
C)Amorphous & crystalline materials
D)Only slurries with coarse particles

Question 14

The main principle of Sieve shaker is:

A)Attrition
B)Centrifugation
C)Agitation
D)Compression

Question 15

Sonic sifter is a variant/modification of which of the following equipment?

A)Sieve Shaker
B)Cyclone separator
C)Air separator
D)Bag Filter

Question 16

Dorrclone is a separator used for separating solid suspended in a liquid such as water, is a modification of which separator?

A)Bag filter
B)Cyclone separator
C)Air separator
D)None of these

Question 17

In mechanism of mixing, which is also known as Macromixing?

A)Shear Mixing
B)Diffusive mixing
C)Both (a) & (b)
D)Convective mixing

Question 18

Ideally in mixing equipment, powder should be filled:

A)Not more than 40%
B)Not more than 50%
C)Not more than 60%
D)Not more than 70%

Question 19

In V-Cone Blender, if the speed is increased to high speed, what is observed?

A)Segregation
B)Sedimentation
C)Separation
D)None of these

Question 20

In ribbon blender, the mechanism of mixing follows

A)Trituration
B)Shear
C)Both of these
D)None of these

Question 21

Ribbon blender is used to mix:

A)Solid Mixing
B)Liquid mixing-Liquid Mixing
C)Solid-Solid Mixing
D)Both (b) or (c)

Question 22

The biggest disadvantage of Sigma Blade mixer is:

A)Size reduction
B)Size separation
C)Fixed speed
D)Dead spots

Question 23

In comparison to Ribbon blender, Planetary Mixer has advantage of:

A)High Shear
B)Fixed speed drive
C)Less headspace requirement
D)No Dead space

Question 24

Aerosol preparations have which phase of mixing?

A)Solid-Liquid Mixing
B)Liquid-Liquid Mixing
C)Liquid-Gas Mixing
D)None of these

Question 25

Which of the following is not a part of mixing vessel?

A)Impeller
B)Baffle
C)Calendria
D)Propellers