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Quiz Final - 20

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

What type of impeller is commonly used for high-viscosity fluids in mixing processes?

a)

Turbine

b)

Propeller

c)

Paddle

d)

Homogenizer

2.

In gas-solid separation, which method relies on the gravitational settling of particles in a vertical column?

a)

Filtration

b)

Cyclonic separation

c)

Sedimentation

d)

Centrifugation

3.

In a cooling crystallization process, what is the effect of decreasing the cooling rate?

a)

Increase in crystal size

b)

Decrease in crystal size

c)

No effect on crystal size

d)

Increase in solubility

4.

What unit operation involves the separation of particles from a gas stream using centrifugal force?

a)

Filtration

b)

Cyclonic separation

c)

Sedimentation

d)

Centrifugation

5.

What is the primary purpose of a pump in fluid transport systems?

a)

Increase pressure

b)

Decrease velocity

c)

Enhance turbulence

d)

Decrease flow rate

6.

What does the term "fluidization" refer to in the context of fluidized bed reactors?

a)

Transition from gas to liquid

b)

Transition from solid to gas

c)

Transition from liquid to solid

d)

Transition from solid to liquid

7.

What is the primary purpose of a jaw crusher in size reduction operations?

a)

To generate heat

b)

To reduce particle size

c)

To separate components

d)

To increase pressure

8.

Which factor influences the efficiency of a ball mill for particle size reduction?

a)

Temperature

b)

Pressure

c)

Rotation speed

d)

Viscosity

9.

In solid-liquid filtration, what is the purpose of a filter medium?

a)

To dissolve solids

b)

To trap solid particles

c)

To increase pressure

d)

To lower viscosity

10.

What is the function of a filter aid in filtration processes?

a)

Increase filter pore size

b)

Enhance cake formation

c)

Decrease filter area

d)

Decrease pressure drop

11.

What is the primary factor influencing the drying rate in a batch drying process?

a)

Air velocity

b)

Temperature

c)

Particle size

d)

Pressure

12.

What type of equipment is commonly used for the size enlargement of particles in granulation processes?

a)

Crusher

b)

Pulverizer

c)

Granulator

d)

Fluidized bed dryer

13.

In pneumatic conveying, what is the primary mechanism for transporting bulk solids?

a)

Gravity

b)

Vibration

c)

Air pressure

d)

Magnetic force

14.

Which mechanical unit operation involves the separation of components based on their density in a liquid medium?

a)

Filtration

b)

Centrifugation

c)

Sedimentation

d)

Cyclonic separation

15.

Which mechanical unit operation is involved in the separation of solid particles from a gas stream using gravitational forces?

a)

Filtration

b)

Cyclonic separation

c)

Sedimentation

d)

Centrifugation

16.

What is the primary purpose of baffles in an agitated tank?

a)

Reduce tank size

b)

Increase fluid velocity

c)

Enhance mixing efficiency

d)

Decrease heat transfer

17.

Trommels separate a mixture of particles depending on their:

a)

Size

b)

Wet ability

c)

Screen size

d)

Electrical and magnetic properties

18.

The ratio of the area of opening in one screen (Taylor series) to that of openings in the next smaller screen is:

a)

1.5

b)

1

c)

2

d)

None of these

19.

200 mesh screens means:

a)

200 openings/cm

b)

200 openings/inch

c)

200 openings/cm²

d)

200 openings/inch²

20.

Which of the following factors is crucial in determining the Net Positive Suction Head (NPSH) required for a pump?

a)

Pump speed

b)

Fluid viscosity

c)

Discharge pressure

d)

Pump efficiency