131. 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.
Mass Transfer MCQs
132. 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.
133. For a ternery mixture, in which equilateral triangular co-ordinate is used in leaching and extraction, a __________ of the equilateral triangular co-ordinates.
Binary mixture is represented by the apex
Binary mixture is represented by any point inside
Ternery mixture is represented by the sides
Pure component is represented by the apex
✅ The correct answer is option D.
134. The value of NA/(NA + NB) for steady state molecular diffusion of gas ‘A’ through non-diffusing gas ‘B’ is
1
∞
0.5
2
✅ The correct answer is option A.
135. Weight of 1 m³ of humid air as compared to 1 m³ of dry air, under the same conditions, is
Less
More
Same
Unpredictable
✅ The correct answer is option A.
136. With increase in temperature, the rate of extraction in leaching (solid-liquid extraction system)
Increases
Decreases
Remains unaffected
Increases Linearly
✅ The correct answer is option A.
137. Which of the following decreases during evaporative cooling process with recirculated water supply?
Wet bulb temperature
Relative humidity
Partial pressure of vapour
None of these
✅ The correct answer is option D.
138. Hypersorption refers to a __________ process.
Fixed bed absorption
Moving bed absorption
Fixed bed adsorption
Moving bed adsorption
✅ The correct answer is option D.
139. Cox chart is useful in the design of
Distillation column
Evaporator
Dryer
Crystalliser
✅ The correct answer is option A.
140. At a fixed pressure, the humidity depends upon the partial pressure of vapor in the mixture. Humidity of a vapour free gas is __________ percent.
100
0
50
Between 0 and 100
✅ The correct answer is option B.