Absorption
Adsorption
Extraction
Leaching
✅ The correct answer is option B.
Chemical Engineering MCQs
Water entrained by circulating air in cooling towers is termed as
Drift
Blow down
Vapor load
None of these
✅ The correct answer is option A.
(NSh/NRe.NSc) is termed in mass transfer operation as the
Stanton number
Peclet number
Thermal diffusivity
Momentum diffusivity
✅ The correct answer is option A.
The equipment frequently used for adiabatic humidification-cooling operation with recirculating liquid is
Natural draft cooling tower
Induced draft cooling tower
Spray chamber
None of these
✅ The correct answer is option C.
Heat in BTU necessary to increase the temperature of 1 lb of gas and its accompanying vapour by 1°F is called the
Latent heat
Humid heat
Specific heat
Sensible heat
✅ The correct answer is option C.
In a solution containing 0.30 Kg mole of solute and 600 kg of solvent, the molality is
0.5
0.6
2
1
✅ The correct answer is option A.
To get high tray efficiency
Interfacial surface between liquid and gas phase should be large
Time of contact between the two phases should be less
Gas velocity should be very low
Liquid entrainment should be severe
✅ The correct answer is option A.
For the same feed, feed quality and separation (in a distillation column), with the increase of total pressure, the number of ideal plates will
Increase
Decrease
Remain same
Data insufficient, can’t be predicted
✅ The correct answer is option A.
In case of absorption & stripping, the interface of the liquid & gas phases are present in equilibrium, when the diffusional resistance of __________ is zero.
Interface
Gas phase
Liquid phase
All of the above
✅ The correct answer is option A.
__________ is the separation technique used for desalination of sea water.
Thermal diffusion
Reverse osmosis
Adsorption
Absorption
✅ The correct answer is option B.