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Chemical Engineering - Mass Transfer

Exercise : Mass Transfer - Section 1
21.
Relative humidity is the ratio of the
partial pressure of the vapour to the vapour pressure of the liquid at room temperature.
partial pressure of the vapour to the vapour pressure of the liquid at gas temperature.
actual humidity to saturation humidity.
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
In batch distillation with constant reflux, overhead product composition __________ with time.
increases
decreases
does not vary
may increase on decrease, depends on the system.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
Psychrometry deals with the properties of gas-vapor mixture. Humidity can be determined by the measurement of the __________ of a fibre.
electrical resistance
thermal conductivity
strength
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
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
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
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'
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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