Question 1

The working of Fluid energy mill is based on principle of&#10;A)Impact&#10;B)Attrition&#10;C)Cutting&#10;D)Both a & b

Accepted Answer

The fluid energy mill works on the principle of both impact and attrition. The high-velocity particles collide with each other and the walls of the chamber, causing size reduction.

Question 2

Size reduction is also known as:&#10;A)Comminution&#10;B)Pulverization&#10;C)Diminution&#10;D)All of the above

Accepted Answer

Comminution&#10;

Question 3

The bell crank lever arrangement is major part of which of the following&#8230;&#8230;&#8230;:&#10;A)Cyclone separator&#10;B)Edge runner Mill&#10;C)End runner Mill&#10;D)Bag filter

Accepted Answer

Bag filter&#10;

Question 4

The hammer mill operates on the principle of:&#10;A)Impact&#10;B)Attrition&#10;C)Compression&#10;D)Cutting

Accepted Answer

The hammer mill operates primarily on the principle of impact, where the material is struck by hammers to break it into smaller pieces.

Question 5

Ball Mill operates at the speed of?&#10;A)Low speed&#10;B)High speed&#10;C)Optimum speed&#10;D)All of the above

Accepted Answer

A ball mill operates at an optimum speed to ensure efficient grinding and to prevent excessive wear and tear on the mill and its components.

Question 6

Fluid Energy Mill works on the principle of:&#10;A)Impact & Attrition&#10;B)Rotor & Stator&#10;C)Compression&#10;D)Attrition

Accepted Answer

Fluid Energy Mill operates on the principle of Impact and Attrition, utilizing high-speed particle collisions and attrition to achieve size reduction.

Question 7

Fibrous drugs are milled by using:&#10;A)Cutter Mill&#10;B)Hammer Mill&#10;C)Fluid Energy Mill&#10;D)Ball Mill

Accepted Answer

Cutter mills are used for milling fibrous materials as they can cut through the fibers effectively.

Question 8

Mills are not suitable for Friable (heat sensitive) materials?&#10;A)Cutter Mill&#10;B)Hammer mill&#10;C)Colloidal Mill&#10;D)All of the above

Accepted Answer

Mills like Cutter Mill, Hammer Mill, and Colloidal Mill are not suitable for friable, heat-sensitive materials because these methods involve mechanical forces that can generate heat and cause degradation of such materials.

Question 9

In Azeotropic distillation __________ remains low:&#10;A)Heat&#10;B)Volatility&#10;C)Relativity Volatility&#10;D)None of these

Accepted Answer

In azeotropic distillation, the relative volatility of the components in the azeotrope is low, meaning there is little difference in the boiling points of the components, which makes their separation by conventional distillation difficult.

Question 10

In Vacuum Distillation, Substance boils at a/an:&#10;A)Exact temperature&#10;B)temperature slightly above its boiling point&#10;C)temperature below its boiling point&#10;D)High Pressure

Accepted Answer

In vacuum distillation, the pressure above the liquid mixture to be distilled is reduced, which decreases the boiling points of the components of the mixture. This allows the substance to boil at a temperature below its normal boiling point.

Question 11

In the fractionating column of fraction distillation, as we go higher in the column the&#8230;..?&#10;A)Temperature becomes lower&#10;B)Temperature becomes higher&#10;C)minimum absorption occurs&#10;D)Sublimation risk increases

Accepted Answer

The answer of In the fractionating column of fraction distillation,...

Question 12

Rate of evaporation is______:&#10;A)directly proportional to temperature of liquid&#10;B)inversely proportional to temperature of liquid&#10;C)independent of temperature of liquid&#10;D)directly proportional to humidity of surrounding air

Accepted Answer

The answer of Rate of evaporation is______:&#10;A)directly proportional to temperature...

Question 13

Which of the following factors do not affect the rate of evaporation?&#10;A)Temperature of liquid&#10;B)Humidity of surrounding air&#10;C)Depth of liquid&#10;D)Surface of liquid

Accepted Answer

The answer of Which of the following factors do not...

Question 14

Which of the following is a characteristic of a horizontal tube evaporator?&#10;A)Agitation is provided only by bubbles leaving the evaporator as vapor&#10;B)The tube bundle is arranged vertically, with the solution inside the tubes condensing outside&#10;C)To handle viscous solution a pump is used to force liquid upwards&#10;D)Also called short vertical tube evaporator

Accepted Answer

The answer of Which of the following is a characteristic...

Question 15

The (emissivity) of a black body is:&#10;A)1&#10;B)1.5&#10;C)2&#10;D)None

Accepted Answer

The answer of The (emissivity) of a black body is:&#10;A)1&#10;B)1.5&#10;C)2&#10;D)None...

Question 16

Mean free path is associated with which type of distillation?&#10;A)Steam&#10;B)Evaporative&#10;C)Azeotropic&#10;D)Fractional

Accepted Answer

The answer of Mean free path is associated with which...

Question 17

Which one of the following rate is observed in mixing of solids?&#10;A)First order law&#10;B)zero order law&#10;C)Second order law&#10;D)none

Accepted Answer

The answer of Which one of the following rate is...

Question 18

Unit of the rate of heat transfer is&#10;A)Joule&#10;B)Newton&#10;C)Pascal&#10;D)Watt

Accepted Answer

The answer of Unit of the rate of heat transfer...

Question 19

Which type of mixture is easily formed?&#10;A)Positive&#10;B)Negative&#10;C)Neutral&#10;D)Ampholytic

Accepted Answer

The answer of Which type of mixture is easily formed?&#10;A)Positive&#10;B)Negative&#10;C)Neutral&#10;D)Ampholytic...

Question 20

Mechanism not used in solid-solid Mixing:&#10;A)Connective&#10;B)Shear Mixing&#10;C)Diffusion&#10;D)Tumbling

Accepted Answer

The answer of Mechanism not used in solid-solid Mixing:&#10;A)Connective&#10;B)Shear Mixing&#10;C)Diffusion&#10;D)Tumbling...

Question 21

Mechanism of mixing in sigma blade mixer:&#10;A)Connective&#10;B)Tumbling&#10;C)Shearing&#10;D)Diffusion

Accepted Answer

The answer of Mechanism of mixing in sigma blade mixer:&#10;A)Connective&#10;B)Tumbling&#10;C)Shearing&#10;D)Diffusion...

Question 22

Mechanism of mixing in silverson mixer is:&#10;A)Connective&#10;B)laminar&#10;C)Random&#10;D)Turbulent

Accepted Answer

The answer of Mechanism of mixing in silverson mixer is:&#10;A)Connective&#10;B)laminar&#10;C)Random&#10;D)Turbulent...

Question 23

Degree of mixing is also known as:&#10;A)Degree of Homogeneity&#10;B)Extent of mixing&#10;C)Ordered Mixing&#10;D)Random Mixing

Accepted Answer

The answer of Degree of mixing is also known as:&#10;A)Degree...

Question 24

__________ states that the rate of heat flow through a uniform material is proportional to the area and temperature and inversely proportional to the length of the path of flow.&#10;A)Newton's law&#10;B)Kick's law&#10;C)Fourier's law&#10;D)Chatelier's law

Accepted Answer

The answer of __________ states that the rate of heat...

Deck 1: Principles and Mechanisms in Milling, Distillation, and Mixing Processes