February 2019 | Page 110 of 448 | AnsweringExams.Com

In case of steam distillation, the steam leaving the liquid is not completely saturated with distillate vapour, because_______________?

August 22, 2021February 18, 2019 by admin

In case of steam distillation, the steam leaving the liquid is not completely saturated with distillate vapour, because_______________?

A. Temperature is less
B. Total pressure is less
C. Mixing of steam with the material being vaporised is not so intimate as to result in equilibrium
condition
D. Saturated steam is used for steam distillation

_____________ temperature is the steady state temperature attained by a small amount of liquid evaporating into a large quantity of unsaturated gas-vapor mixture ?

August 22, 2021February 18, 2019 by admin

_____________ temperature is the steady state temperature attained by a small amount of liquid evaporating into a large quantity of unsaturated gas-vapor mixture ?

A. Dry bulb
B. Wet bulb
C. Dew point
D. None of these

Heat load in a cooling tower______________________?

August 22, 2021February 18, 2019 by admin

Heat load in a cooling tower______________________?

A. Means the amount of heat thrown away (KCal/hr.) by the cooling tower
B. Is equal to the number of kg, of water circulated times the cooling range
C. Both A. & B.
D. Neither A. nor B.

A good solvent used for absorption should not have very high____________________?

August 22, 2021February 18, 2019 by admin

A good solvent used for absorption should not have very high____________________?

A. Viscosity
B. Vapor pressure
C. Freezing point
D. All A., B. & C.

Dew point of a gas-vapour mixture_____________________?

August 22, 2021February 18, 2019 by admin

Dew point of a gas-vapour mixture_____________________?

A. Increases with temperature rise
B. Decreases with temperature rise
C. Decreases with decrease in pressure
D. Increases with increase in pressure

Deaeration (removal of O2) of water is done by_________________?

August 22, 2021February 18, 2019 by admin

Deaeration (removal of O2) of water is done by_________________?

A. Rectification
B. Absorption
C. Ion-exchange
D. Adsorption

For _______________ drying, the effects of velocity, temperature and humidity of the gas and the thickness of the solid are the same?

August 22, 2021February 18, 2019 by admin

For _______________ drying, the effects of velocity, temperature and humidity of the gas and the thickness of the solid are the same?

A. Unsaturated surface
B. Constant rate
C. Both A. and B.
D. Neither A. nor B.

Rate of leaching increases with increasing______________________?

August 22, 2021February 18, 2019 by admin

Rate of leaching increases with increasing______________________?

A. Temperature
B. Viscosity of solvent
C. Pressure
D. Size of the solid

The term “cooling range” in a cooling tower refers to the difference in the temperature of____________________?

August 22, 2021February 18, 2019 by admin

The term “cooling range” in a cooling tower refers to the difference in the temperature of____________________?

A. Cold water leaving the tower and the wet bulb temperature of the surrounding air
B. Hot water entering the tower and the wet bulb temperature of the surrounding air
C. Hot water entering the tower and the cooled water leaving the tower
D. None of these

When the liquid over a plate is of uniform concentration, then ______________________?

August 22, 2021February 18, 2019 by admin

When the liquid over a plate is of uniform concentration, then ______________________?

A. Murphree efficiency > point efficiency
B. Murphree efficiency < point efficiency
C. Murphree efficiency = point efficiency
D. Murphree efficiency ≠ point efficiency