**1.The factor most responsible for making good ice cream is**

A) water content

B) mixing index

C) emulsifying agent

D) homogenization

**2. Which one of the following is not a component of an
evaporator?**

A) Heat exchanger

B) Condenser

C) Vacuum separator

D) Cyclone separator

**3. The rate of cream separation in a disc bowl centrifuge can
be increased by**

A) increasing the size of the bowl

B) lower viscosity of fluid

C) increasing rpm of the bowl

D) all of these.

**4. Identify the correct statement related to the viscosity of
Newtonian fluids from the following.**

A) It is not influenced by temperature

B) It increases with shearing rate

C) It decreases with shearing rate

D) It is not influenced by shearing date

**5. Identify the example of a classical diffusional mass
transfer process without involving heat, among the following.**

A) Drying of food grains

B) Carbonation of beverages

C) Distillation of alcohol

D) Concentration of fruit juice

**6. Ratio of Schmidt number to Lewis number is **

A) Prandtl number

B) Nusselt Number

C) Reynolds number

D) Sherwood number

**7. A fluid with flow behavior index less than one (n>1) is **

A) dilatant

B) pseudoplastic

C) Bingham plastic

D) Newtonian

**8. Power consumption in liquid mixing is proportional to ------**

A) power number x liquid density x (rotational speed )^{3}x
(impeller diameter)^{3}

B) power number X liquid density X (rotational speed )^{2}X
(impeller diameter)^{3}

C) power number X liquid density x viscosity of the liquid(rotational
speed )^{3}X (impeller diameter)^{3}

D) Acceleration due to gravity X liquid density x rotation speed X (impeller diameter)5

**9. What is the percent relative humidity at which both the
dry bulb and wet bulb thermometers would record equal temperatures**

A) 0

B) 10

C) 50

D) 100

**10. How many fold would the g
number of a centrifuge increasing by doubling both the spinning speed
and bowl diameter?**

A) 2

B) 4

C) 8

D) 16

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**Answers**

1. D) homogenization

2. D) Cyclone separator

3. D) all of these.

4. D) It is not influenced by shearing date

5. B) Carbonation of beverages

6. A) Prandtl number

7. B) pseudoplastic

8. A) power number x liquid density x (rotational speed )^{3}x (impeller diameter)^{3}

9. D) 100

10. C) 8