Knudsen diffusion is directly proportional to _____________________?
Correct answer: B. √T
- A. T
- B. √T
- C. 1/√T
- D. T2
Explanation
Knudsen diffusivity is controlled by molecular-wall collisions and varies as the mean molecular speed. Since molecular speed is proportional to the square root of absolute temperature, D_K is proportional to √T.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Mass Transfer Operations
669 free Mass Transfer Operations MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Mass Transfer Operations questions
Bulk diffusion in catalyst pore _______________ with increase in pressure?
Which of the following curves shows the effect of temperature on the extent of gas-solid adsorption at a given pressure ?
Most important characteristics of gas-liquid reactors are the________________?
_____________ gas is normally employed in B.E.T. method of finding out the surface area of catalyst?
Brunauer, Emmet and Teller (BET) equation is used to determine the specific surface area of a porous particle but not the pore volume & the porosity of the catalyst bed. Which of the following postulates is not used to derive BET equation ?
Gelatinous solid (which plug the septum) can be filtered by a _____________ filter?