Free Agricultural/Bioengineering Food Processing Unit Operation Questions and Answers

Question 1

The fundamental activities carried out in the engineering of food processes are known as .

Accepted Answer

unit operations

Answer

unit process

Answer

processing

Answer

process management

Question 2

The unit operations are which of the following?

Accepted Answer

Distillation, evaporation, centrifugation

Answer

Evaporation, centrifugation, sampling

Answer

Distillation, membrane separation, sampling

Answer

Membrane separation, centrifugation, sampling

Question 3

The foundation of unit operation is .

Accepted Answer

law of conservation of mass and energy

Answer

third law of thermodynamics only

Answer

law of conservation of mass only

Answer

law of conservation of energy only

Question 4

The heat lost while heating water in an evaporator must match the .

Accepted Answer

sum of heat gained by the product and heat lost from the evaporator to its surroundings

Answer

overall heat lost from the evaporator

Answer

heat gained by the product

Answer

sum of heat lost from the evaporator to its surroundings in each step

Question 5

Any food industry's preliminary unit operation involves _______ .

Accepted Answer

cleaning, sorting

Answer

sorting, drying

Answer

grading, drying

Answer

cleaning, drying

Question 6

What characteristics should be taken into account while building a unit operation equipment?

Accepted Answer

Physical, chemical, mechanical properties

Answer

Only Physical properties and chemical properties

Answer

Only Chemical properties and mechanical properties

Answer

Only Physical properties and mechanical properties

Question 7

The film heat transfer coefficient is measured in SI units as .

Accepted Answer

W K/m2

Answer

W/ (m2K)

Answer

(m2K)/W

Answer

Wm2K

Question 8

Specific gravity is measured in units.

Accepted Answer

dimensionless

Answer

g/cm3

Answer

g/cm

Answer

kg/m3

Question 9

Dynamic viscosity is measured in SI units as .

Accepted Answer

pascal-second

Answer

poise

Answer

poise-second

Answer

pascal- minute

Question 10

It is known as _______ to analyze physical phenomena in variables and correlate them to produce a dimensionless group.

Accepted Answer

Dimensional analysis

Answer

Dimensional variable

Answer

Dimensional constants

Answer

Dimensional homogeneity