Question 1

A body whose absorptivity is constant at all wavelengths of radiation, at a given temperature is known as&#10;A)Black Body&#10;B)Grey body&#10;C)White Body&#10;D)Shinning body

Accepted Answer

A grey body is defined as a body whose absorptivity does not change with the wavelength of radiation, although it is less than 1 at all wavelengths. This means it absorbs a constant fraction of incident radiation across all wavelengths, unlike a black body which absorbs all incident radiation (absorptivity = 1 at all wavelengths).

Question 2

Which of the following is used for drying blood plasma:&#10;A)Spray drying&#10;B)Freeze drying&#10;C)Vacuum Drying&#10;D)Fluid Bed drying

Accepted Answer

Freeze drying, also known as lyophilization, is commonly used for drying blood plasma because it preserves the biological properties of proteins and other sensitive components in the plasma by removing water under low temperature and vacuum, ensuring the stability and longevity of the dried product.

Question 3

Which equipment is used for mixing of immiscible liquids?&#10;A)Airjet Mixer&#10;B)Jet Mixer&#10;C)Silverson Mixer&#10;D)Sigma Mixer

Accepted Answer

Silverson Mixers are designed for rapid and efficient mixing of immiscible liquids, creating emulsions and suspensions by applying high shear to the mixture.

Question 4

Which one of these drying techniques is used for drying antibiotics and plant extract?&#10;A)Vacuum Dryer&#10;B)Freeze dryer&#10;C)Spray dryer&#10;D)None of these

Accepted Answer

Freeze drying is commonly used for drying antibiotics and plant extracts because it preserves the integrity and activity of these sensitive compounds by removing water under low temperature and vacuum, preventing thermal degradation.

Question 5

____________ method of distillation is used for the purification & separation of chemicals of low vapor pressure&#10;A)Steam Distillation&#10;B)Destructive distillation&#10;C)Simple Distillation&#10;D)Molecular Distillation

Accepted Answer

Molecular distillation is used for the purification and separation of chemicals of low vapor pressure because it operates at pressures well below atmospheric pressure, reducing the boiling point of the substances involved, which is ideal for heat-sensitive and low vapor pressure materials.

Question 6

Rectification is another name of:&#10;A)Fractional distillation&#10;B)Molecular distillation&#10;C)Simple distillation&#10;D)Destructive distillation

Accepted Answer

Rectification is another name for fractional distillation, which is a process used to separate mixtures into their individual components based on differences in boiling points.

Question 7

In which dryer, hot air jets are used for drying purpose?&#10;A)Vacuum Dryer&#10;B)Spray Dryer&#10;C)Roller Dryer&#10;D)Fluidized Bed dryer

Accepted Answer

In a Fluidized Bed Dryer, hot air jets are used to fluidize the particles, allowing for efficient drying.

Question 8

A black body is perfect&#10;A)Emitter only&#10;B)Absorber only&#10;C)emitter and absorber&#10;D)none of the above

Accepted Answer

A black body is an idealized physical body that absorbs all incident electromagnetic radiation, regardless of frequency or angle of incidence. It is also a perfect emitter, in that it emits radiation at the maximum rate possible for any given temperature, according to Planck's law of black-body radiation. Thus, it is both a perfect emitter and absorber.

Question 9

What are advantages of the spray drying process:&#10;A)Evaporation is very rapid&#10;B)Most of the heat being used as latent heat of vaporisation&#10;C)The powder will have uniform and controllable particle size&#10;D)All of the above

Accepted Answer

Spray drying is a method where liquid is rapidly dried to form a powder, offering several advantages: rapid evaporation ensures efficiency; most heat is utilized as latent heat of vaporization, making the process energy-efficient; and it allows for control over the particle size of the powder, ensuring uniformity.

Question 10

What are physical factors affecting in the selection of the materials for the construction of pharmaceutical plant:&#10;A)Strength&#10;B)Weight&#10;C)Ease of fabrication&#10;D)All of the above

Accepted Answer

All of the above factors, including strength, weight, and ease of fabrication, are important physical considerations in selecting materials for constructing a pharmaceutical plant. These factors ensure the facility is safe, efficient, and capable of meeting the specific demands of pharmaceutical production.

Question 11

Which is not a non-ferrous metal?&#10;A)Copper&#10;B)Aluminum&#10;C)Steel&#10;D)Lead

Accepted Answer

The answer of Which is not a non-ferrous metal?&#10;A)Copper&#10;B)Aluminum&#10;C)Steel&#10;D)Lead...

Question 12

Which is used as a placing to protect steel?&#10;A)Asbestos&#10;B)Chromium&#10;C)Glass&#10;D)Rubber

Accepted Answer

The answer of Which is used as a placing to...

Question 13

For ease in size reduction, the material should be.&#10;A)Hard, brittle&#10;B)Soft, tough&#10;C)Hard, tough&#10;D)Soft, brittle

Accepted Answer

The answer of For ease in size reduction, the material...

Question 14

Which of the following factor does NOT affect the size reduction?&#10;A)Hardness&#10;B)Stickiness&#10;C)Viscosity&#10;D)Abrasiveness

Accepted Answer

The answer of Which of the following factor does NOT...

Question 15

Product size achieved by Ball mill?&#10;A)4-325 mesh&#10;B)20-200 mesh&#10;C)20-80 mesh&#10;D)1-30 microns

Accepted Answer

The answer of Product size achieved by Ball mill?&#10;A)4-325 mesh&#10;B)20-200...

Question 16

Product size achieved by hammer mill is&#10;A)4-325 mesh&#10;B)20-200 mesh&#10;C)20-80 mesh&#10;D)1-30 microns

Accepted Answer

The answer of Product size achieved by hammer mill is&#10;A)4-325...

Question 17

Product size achieved by Fluid energy Mill is&#10;A)4-325 mesh&#10;B)20-200 mesh&#10;C)20-80 mesh&#10;D)1-30 microns

Accepted Answer

The answer of Product size achieved by Fluid energy Mill...

Question 18

Which one is called coarse powder?&#10;A)It is powder in which all the particles must pass through the sieve no. 10&#10;B)It is powder in which all the particles must pass through the sieve no. 22&#10;C)It is powder in which all the particles must pass through the sieve no. 44&#10;D)It is powder in which all the particles must pass through the sieve no. 85

Accepted Answer

The answer of Which one is called coarse powder?&#10;A)It is...

Question 19

Number of sieve is defined as?&#10;A)This is the number of meshes in a length of 25.4 mm in each direction, parallel to the wires&#10;B)This is the number of meshes in a length of 24.5 mm in each direction, parallel to the wires&#10;C)This is the number of meshes in a length of 26.5 mm in each direction, parallel to the wires&#10;D)This is the number of meshes in a length of 28.4 mm in each direction, parallel to the wires

Accepted Answer

The answer of Number of sieve is defined as?&#10;A)This is...

Question 20

Which of these is not a mechanism of size separation?&#10;A)Agitation&#10;B)Brushing method&#10;C)Centrifugal force&#10;D)Compression

Accepted Answer

The answer of Which of these is not a mechanism...

Question 21

Heat transfer takes place according to&#10;A)First law of thermodynamics&#10;B)Second law of thermodynamics&#10;C)Third law of thermodynamics&#10;D)Zeroth law of thermodynamics

Accepted Answer

The answer of Heat transfer takes place according to&#10;A)First law...

Question 22

Fourier law of heat conduction is based on the assumption that&#10;A)Heat Flow through a solid in one dimension&#10;B)Heat flow is in steady state&#10;C)Both (A) & (B)&#10;D)None of the options

Accepted Answer

The answer of Fourier law of heat conduction is based...

Question 23

Stefan Boltzmann law is applicable for heat transfer by&#10;A)Conduction&#10;B)Convection&#10;C)Radiation&#10;D)Conduction & Radiation combined

Accepted Answer

The answer of Stefan Boltzmann law is applicable for heat...

Question 24

The amount of radiation mainly depends on:&#10;A)Nature of body&#10;B)Temperature of body&#10;C)Type of Surface of body&#10;D)All of the above

Accepted Answer

The answer of The amount of radiation mainly depends on:&#10;A)Nature...

Deck 2: Materials and Heat Transfer Processes