Mass Transfer-Data Intensity 2 Multiple Questions and Answers.




6.For the flow of gases through a capillary, with increase in temperature, the permeability ______ as per Knudsen law?
A. Increases
B. Decreases
C. Remain same
D. Either A. or B.; depends on the gas

7.Moisture content of a substance when at equilibrium with a given partial pressure of the vapour is called the _______ moisture?
A. Free
B. Unbound
C. Equilibrium
D. Bound

8.For absorbing a sparingly soluble gas in a liquid, the___?
A. Gas side co-efficient should be increased
B. Liquid side coefficient should be increased
C. Gas side co-efficient should be decreased
D. Liquid side co-efficient should be decreased

9.The relative volatility of a binary mixture at the Azeotropic composition is?
A. 1-Jan
B. > 1
C. 0
D. None of above

10.Penetration theory states that the mass transfer co-coefficient is equal to (where, De is diffusivity and ‘t’ is time) ?
A. (De.t)1/2
B. (De/t)1/2
C. (4De/?t)1/2
D. (4De/t)

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