Mass Transfer

Mass transfer rate between two fluid phases does not necessarily depend on the ______________ of the two phases?

Byadmin February 17, 2019August 22, 2021

Mass transfer rate between two fluid phases does not necessarily depend on the ______________ of the two phases?

A. Chemical properties
B. Physical properties
C. Degree of turbulence
D. Interfacial area

Mass Transfer

In steam distillation, the _____________________?

In steam distillation, the _____________________?

A. Temperature is 100°C
B. Temperature is more than 100° C
C. Product must be immiscible with water
D. Temperature is higher than the boiling point of either component

Read More In steam distillation, the _____________________?
Mass Transfer

With increase in temperature, the leaching rate increases due to__________________?

With increase in temperature, the leaching rate increases due to__________________?

A. Decreased liquid viscosity
B. Increased diffusivity
C. Both A. and B.
D. Neither A. nor B.

Read More With increase in temperature, the leaching rate increases due to__________________?
Mass Transfer

A distillation column with N plates is being operated under normal conditions. At some point of time, the operation is shifted to total reflux condition (i.e., no product and residue are being withdrawn and feed to the column is stopped). At the new steady state ?

A distillation column with N plates is being operated under normal conditions. At some point of time, the operation is shifted to total reflux condition (i.e., no product and residue are being withdrawn and feed to the column is stopped). At the new steady state ?

A. Composition of vapors and that of liquid do not vary throughout the column
B. Reboiler load and condenser load are minimum
C. The top and bottom compositions are unchanged with and without total reflux
D. The top and bottom compositions correspond to the maximum enrichment available

Read More A distillation column with N plates is being operated under normal conditions. At some point of time, the operation is shifted to total reflux condition (i.e., no product and residue are being withdrawn and feed to the column is stopped). At the new steady state ?
CHEMICAL ENGINEERING | Mass Transfer

A 25 cm x 25 cm x 1 cm flat sheet weighing 1.2 kg initially was dried from both sides under constant drying rate conditions. It took 1500 seconds for the weight of the sheet to reduce to 1.05 kg. Another 1m x 1m x 1cm flat sheet of the same material is to be dried from one side only.Under the same constant drying rate conditions, the time required for drying (in seconds) from its initial weight of 19.2 kg to 17.6 kg is

Question: A 25 cm x 25 cm x 1 cm flat sheet weighing 1.2 kg initially was dried from both sides under constant drying rate conditions. It took 1500 seconds for the weight of the sheet to reduce to 1.05 kg. Another 1m x 1m x 1cm flat sheet of the same material is to be dried from one side only.Under the same constant drying rate conditions, the time required for drying (in seconds) from its initial weight of 19.2 kg to 17.6 kg is
[A].

1000
[B].
1500
[C].
2000
[D].
2500

Answer: Option A

Explanation:

No answer description available for this question.

Read More A 25 cm x 25 cm x 1 cm flat sheet weighing 1.2 kg initially was dried from both sides under constant drying rate conditions. It took 1500 seconds for the weight of the sheet to reduce to 1.05 kg. Another 1m x 1m x 1cm flat sheet of the same material is to be dried from one side only.Under the same constant drying rate conditions, the time required for drying (in seconds) from its initial weight of 19.2 kg to 17.6 kg is
Mass Transfer

Removal of ______________ exemplifies an adsorption unit operation?

Removal of ______________ exemplifies an adsorption unit operation?

A. Uranium from its ore
B. Water from petrol
C. Ammonia from coke oven gas
D. Mustard oil from mustard seed

Read More Removal of ______________ exemplifies an adsorption unit operation?
Mass Transfer

_________________ is the separation technique used for desalination of sea water ?

_________________ is the separation technique used for desalination of sea water ?

A. Thermal diffusion
B. Reverse osmosis
C. Adsorption
D. Absorption

Read More _________________ is the separation technique used for desalination of sea water ?

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