Chemical Engineering - Mass Transfer

46.
A distillation column separates 10000 kg/hr of a benzene-toluene mixture as shown in the figure below :

In the figure xF, xD and xW represent the weight fraction of benzene in the feed, distillate and residue respectively. The reflux ratio is
0.5
0.6
1.0
2.0
Answer: Option
Explanation:
No answer description is available. Let's discuss.

47.
Unsaturated air (with dry bulb and wet bulb temperatures being 45°C and 25°C respectively) is passed through a water spray chamber maintained at 23°C. The air will be cooled and
humidified with wet bulb temperature decreasing.
humidified at constant wet bulb temperature.
dehumidified.
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.

48.
Humid volume, at a given temperature is a/an __________ function of humidity.
inverse
exponential
linear
logarithmic
Answer: Option
Explanation:
No answer description is available. Let's discuss.

49.
The Schmidt number which is defined as, μ/ρ D, is the ratio of the
momentum diffusivity to the mass dif-fusivity.
thermal diffusivity to the mass diffusivity.
momentum diffusivity to the thermal diffusivity.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

50.
If f is defined as above, then which of the following applies to a feed at dew point ?
f = 1
f < 1
f > 1
0 < f < 1
Answer: Option
Explanation:
No answer description is available. Let's discuss.