Mass Transfer - Study Mode
[#406] In case of liquids, the binary diffusivity is proportional to (where, T = temperature)
Correct Answer
(A) T
Explanation
Solution: Binary diffusivity in liquids primarily depends on the temperature, and for liquids, it is directly proportional to the temperature . The relationship of binary diffusivity with temperature differs between gases and liquids. For gases, binary diffusivity (D) is proportional to T 3/2 /P , where P is pressure. However, in liquids, binary diffusivity is proportional to T as temperature changes have a more direct impact due to the close molecular interactions in liquid phases.
[#407] Which of the following assumes constant molal vaporisation and overflow?
Correct Answer
(A) McCabe-Thiele method
[#408] The wetted wall tower is used to determine
Correct Answer
(A) Individual mass transfer co-efficient (M.T.C.) in gaseous system
[#409] If mass diffusivity in a mixture is equal to the thermal diffusivity, then the Lewis number is
Correct Answer
(B) 1
[#410] With increase in pressure, the relative volatility for a binary system
Correct Answer
(B) Decreases