Mass Transfer - Practice Test

[#471] In case of an absorber, the operating

(A) Line always lies above the equilibrium curve

(B) Line always lies below the equilibrium curve

(C) Line can be either above or below the equilibrium curve

(D) Velocity is more than the loading velocity

Correct Answer

(A) Line always lies above the equilibrium curve

[#472] Dew point of an air-water vapor mixture

(A) Decreases with decrease in pressure

(B) At constant humidity & total pressure is fixed

(C) Corresponding to any point on the humidity chart is obtained by projecting a line through this point parallel to the temperature axis and to the saturation curve

(D) All of the above

Correct Answer

(D) All of the above

[#473] __________ extractor is used for the concentration of radioactive nuclear waste.

(A) Pulsed column

(B) Seive plate

(C) Mixer-settler

(D) Ballman

Correct Answer

(A) Pulsed column

[#474] Psychrometry deals with the properties of gas-vapor mixture. Humidity can be determined by the measurement of the __________ of a fibre.

(A) Electrical resistance

(B) Thermal conductivity

(C) Strength

(D) None of these

Correct Answer

(A) Electrical resistance

[#475] Overall efficiency of the distillation column is

(A) The ratio of number of ideal plates to actual plates

(B) The ratio of number of actual plates to ideal plates

(C) Same as the Murphree efficiency

(D) Always more than the point efficiency

Correct Answer

(A) The ratio of number of ideal plates to actual plates

Mass Transfer - Study Mode

[#471] In case of an absorber, the operating

Correct Answer

[#472] Dew point of an air-water vapor mixture

Correct Answer

[#473] __________ extractor is used for the concentration of radioactive nuclear waste.

Correct Answer

[#474] Psychrometry deals with the properties of gas-vapor mixture. Humidity can be determined by the measurement of the __________ of a fibre.

Correct Answer

[#475] Overall efficiency of the distillation column is

Correct Answer