Related Questions

Drying of a wet solid under constant drying conditions means the exposure of the wet solid to the air of constant
A Humidity
B Velocity
C Temperature
D All of the above
Occurrence of 'case hardening' during drying of a high moisture solid cake __________ the drying rate.
A Increases
B Decreases
C Does not affect
D Exponentially increases
In the constant rate period of the rate of drying curve for batch drying,
A Cracks develop on the surface of the solid
B Rate of drying decreases abruptly
C Surface evaporation of unbound moisture occurs
D None of these
During constant rate drying period, vaporisation rate per unit drying surface area
A Decreases with time
B Increases with time
C Does not change with time
D Does not affect the moisture content of the wet solid
With increase in the mass velocity of the gas, the rate of drying during the constant rate period __________ , if the conduction and radiation through the solid are negligible.
A Increases
B Decreases
C Remains same
D Increases linearly
Moisture contained by a substance in excess of the equilibrium moisture is called the __________ moisture.
A Unbound
B Free
C Critical
D Bound
During the constant rate period of drying of a solid,
A Increased air humidity decreases the rate of drying
B Increasing the air temperature decreases the drying rate
C Surface evaporation of unbound moisture occurs
D None of these
The critical moisture content in case of drying indicates the __________ rate period.
A Beginning of falling
B Beginning of constant
C End of falling
D None of these
During constant rate period, the rate of drying decreases with the
A Decrease in air temperature
B Increase in air humidity
C Both A & B
D Neither A nor B
Moisture in a solid exerting an equilibrium vapour pressure equal to that of the pure liquid at the same temperature is called the __________ moisture.
A Unbound
B Critical
C Free
D Bound

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