Question: If f is defined as above, then which of the following applies to a feed at dew point ?
[A].f = 1
f < 1
f > 1
0 < f < 1
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
Chemical Engineering
Flash distillation is suitable for separating the constituents of a binary system, which
Question: Flash distillation is suitable for separating the constituents of a binary system, which
[A].form minimum boiling azeotrope.
have very wide boiling points.
have very close boiling points.
form constant boiling azeotrope.
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
If f = moles of vapour present per mole of feed, then the slope of feed line is (Mcabe-Thiele method)
Question: If f = moles of vapour present per mole of feed, then the slope of feed line is (Mcabe-Thiele method)
[A].
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
Diffusion co-efficient generally depends upon the temperature, pressure & the nature of the components of the system. Its dimension is not the same as that of the
Question: Diffusion co-efficient generally depends upon the temperature, pressure & the nature of the components of the system. Its dimension is not the same as that of the
[A].mass transfer co-efficient.
thermal diffusivity.
kinematic viscosity.
volumetric diffusivity.
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
In case of absorption & stripping, the interface of the liquid & gas phases are present in equilibrium, when the diffusional resistance of __________ is zero.
Question: In case of absorption & stripping, the interface of the liquid & gas phases are present in equilibrium, when the diffusional resistance of __________ is zero.
[A].interface
gas phase
liquid phase
all ‘a’, ‘b’ & ‘c’
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
Diffusion in concentrated solutins differs from that in dilute solutions, because of the change in the __________ with the concentration of the solution.
Question: Diffusion in concentrated solutins differs from that in dilute solutions, because of the change in the __________ with the concentration of the solution.
[A].degree of ideality
viscosity
both ‘a ‘& ‘b’
neither ‘a’ nor ‘b’
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
Dew point of an air-water vapor mixture
Question: Dew point of an air-water vapor mixture
[A].decreases with decrease in pressure.
at constant humidity & total pressure is fixed.
corresponding to any point on the humidity chart is obtained by projecting a line through this point parallel to the temperature axis and to the saturation curve.
all ‘a’, ‘b’ & ‘c’.
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
During dehumidification of unsaturated air wet bulb temperature & partial pressure of vapor are not constant. However, during evaporative cooling process with recirculated water supply, the __________ remains constant.
Question: During dehumidification of unsaturated air wet bulb temperature & partial pressure of vapor are not constant. However, during evaporative cooling process with recirculated water supply, the __________ remains constant.
[A].wet bulb temperature
partial pressure of water vapor
relative humidity
none of these
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
Dry bulb temperature of unsaturated air is more than its __________ temperature.
Question: Dry bulb temperature of unsaturated air is more than its __________ temperature.
[A].dew point
wet bulb
both ‘a’ & ‘b’
neither ‘a’ nor ‘b’
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
Batch tray dryers suffers from the disadvantage of
Question: Batch tray dryers suffers from the disadvantage of
[A].high maintenance cost.
non-uniform & low production rate.
high labour cost & low heat economy.
all ‘a’, ‘b’ & ‘c’.
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.