+1 vote
in Mass Transfer by (37.1k points)
Sublimation of a long cylinder made of napthelene occurs in a large volume of stagnant air. The time required for its complete sublimation is

(a) infinite

(b) half the time of sublimation of a sphere of the same mass

(c) twice the time of sublimation of a cylinder of the same mass and lengthy/diameter=1

(d) half the time of sublimation of a cylinder of the same mass and lengthy/diameter=1

The question was asked in exam.

This key question is from Diffusion through Variable Area topic in section Diffusion in Solids and Molecular Diffusion in Fluids of Mass Transfer

1 Answer

0 votes
by (39.8k points)
The correct answer is (a) infinite

The best explanation: None.

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