Suction pump
Compressed air jet
Steam jet ejector with a barometric condenser
None of these
✅ The correct answer is option C.
Mass Transfer MCQs
In steam distillation, the
Temperature is 100°C
Temperature is more than 100° C
Product must be immiscible with water
Temperature is higher than the boiling point of either component
✅ The correct answer is option C.
__________ equation applies to diffusivities in liquids.
Gilliland
Hirschfelder
Wilke and Chang
None of these
✅ The correct answer is option A.
Radioactive nuclear waste is treated in
Mixer-settler extractor
Rotating-disc contactor
Pulsed column extractor
Bollman extractor
✅ The correct answer is option C.
Tea percolation employs
Liquid-liquid extraction
Leaching
Absorption
None of these
✅ The correct answer is option B.
Minimum reflux ratio in a distillation column results in
Optimum number of trays
Minimum reboiler size
Maximum condenser size
Minimum number of trays
✅ The correct answer is option C.
Which of the following remains constant during sensible cooling process ?
Specific humidity
Partial pressure of vapour
Both A & B
Neither A nor B
✅ The correct answer is option C.
To remove all the moisture from a wet solid it requires exposure to __________ air.
Perfectly dry
Highly humid
High temperature
None of these
✅ The correct answer is option A.
Experiments were conducted to determine the flux of a species A in a stagnant medium across a gas-liquid interface. The overall mass transfer co-efficient based on the liquid side for dilute systems for the above was estimated to be 4 x 10⁻³ kg mole/m².s. The equilibrium data for the system is given as y = 2x. The flux across the interface (in kg mole/m² .s) for bulk concentrations of A in gas phase and liquid phase as y = 0.4 and x = 0.01 respectively is
5.6 x 10⁻⁴
8.5 x 10⁻⁴
5.6 x 10⁻³
8.5 x 10⁻³
✅ The correct answer is option B.
Solvent extraction is the terminology applied to the liquid-liquid extraction, which is preferred for the separation of the components of liquids, when
Extracting solvent is cheaply & abundantly available
One of the liquid components is heat sensitive
Viscosity of liquid components is very high
One of the liquid components has very high affinity towards the solvent
✅ The correct answer is option D.