Increases
Decreases
Remains unchanged
May increase or decrease ; depends on the type of adsorbate
✅ The correct answer is option B.
Chemical Engineering MCQs
Mass transfer co-efficient of liquid is
Affected more by temperature than that for gases
Affected much less by temperature than that for gases
Not affected by the temperature
None of these
✅ The correct answer is option A.
Positive deviation from Raoult’s law means a mixture whose total pressure is
Greater than that computed for ideality
Less than that computed for ideality
Less than the sum of the vapour pressure of the components
None of these
✅ The correct answer is option A.
In case of liquids, the binary diffusivity is proportional to (where, T = temperature)
T
√T
T²
1/T
✅ The correct answer is option A.
Diffusion in concentrated solutins differs from that in dilute solutions, because of the change in the __________ with the concentration of the solution.
Degree of ideality
Viscosity
Both A & B
Neither A nor B
✅ The correct answer is option C.
The partial pressure distribution of an ideal gas diffusing through another stagnant ideal gas at steady state follows a/an __________ law.
Exponential
Parabolic
Linear
Cubic
✅ The correct answer is option A.
A minimum boiling azeotrope is exemplified by
Toluene-benzene
Acetone-carbon disulphide
Water-isobutyl alcohol
None of these
✅ The correct answer is option B.
The relative saturation of an unsaturated mixture of gas and vapor is independent of the
Nature of the vapor
Temperature of the mixture
Composition of the mixture
None of these
✅ The correct answer is option D.
At a fixed total pressure, humidity depends only on the
Partial pressure of vapour in the mixture
Heat capacity of the vapour
Density of the vapour
None of these
✅ The correct answer is option A.
To increase the absorption factor, (where, G = gas flow rate, S = solvent flow rate)
Increase both ‘G’ and ‘S’
Decrease both ‘G’ and ‘S’
Increase ‘S’ and decrease ‘G’
Increase ‘G’ and decrease ‘S’
✅ The correct answer is option C.