Chemical Engineering - Mass Transfer

21.
According to Poiseuille's law, the permeability for gas flow through a capillary is proportional to (where, μ = gas viscosity)
μ
1/μ
μ
μ2
Answer: Option
Explanation:
No answer description is available. Let's discuss.

22.
For a binary mixture distillation process, the degree of freedom is 2. However, if the pressure is fixed in this process, the number of independent variables in this process will be
1
0
2
3
Answer: Option
Explanation:
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23.
H2S is being absorbed in a gas absorber unit. The height of the transfer unit based on the overall mass transfer coefficient on the gas side is 0.4 m. The equilibrium data is given by, y = 1.5 x. The bulk concentration of H2S has to be reduced from 0.05 to 0.001 mole fraction in the gas side. The height of the tower (in metres) corresponding to an operating line given by, y = 5x + 0.001 is
2.0
1.56
1.0
0.56
Answer: Option
Explanation:
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24.
Packed column distillation is limited to the column __________ metres.
height < 6
diameter < 0.6
both (a) & (b)
neither (a) nor (b).
Answer: Option
Explanation:
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25.
For the flow of gases through a capillary, with increase in temperature, the permeability __________ as per Knudsen law.
increases
decreases
remains same
either (a) or (b); depends on the gas
Answer: Option
Explanation:
No answer description is available. Let's discuss.