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drying process

Total questions: 7

Worksheet time: 3mins

Name
Class
Date
1.

what is equilibrium moisture content?

a)

certain volumes of solid is being dried at a time

b)

certain volumes of solid is being dried continuously

c)

lowest moisture content obtainable at equilibrium

d)

moisture above the equilibrium moisture content

2.

what is the type of dryer that NOT suitable for biochemical substances?

a)

drum dryer

b)

shelf dryer

c)

tunnel dryer

d)

freeze dryer

3.

all of the following are the properties of air that can be obtain from psychometric chart, except:

a)

specific volume

b)

specific humidity

c)

relative humidity

d)

relative velocity

4.

what is the difference between drying and evaporation process?

a)

drying is removal of water from substances & evaporation is changing of phase liquid

b)

drying is changing of phase liquid & evaporation is removal of water from substances

c)

no difference

5.

which drying process is allowing for a large quantity of solids and do not required specific time to load and unload the solids?

a)

batch process

b)

continuous process

c)

both

6.

what is the purpose of drying?

a)

Remove moisture

b)

Prevent bacteria growth

c)

Slow down the action of enzyme

d)

All the above

7.

At what rate period did the water evaporates from the surface and it freely available on the surface of the object?

a)

Initial adjustment rate period

b)

Constant rate period

c)

Falling rate period