A cylinder of sulfur is kept in a large volume of stagnant air for sublimation. How much time will be required for its complete sublimation?
(a) One fourth the time required by sphere of same mass
(b) Half the time required by a cube of same mass
(c) One fourth the time required by a cube of same mass
(d) Infinite
The question was posed to me during an internship interview.
I'm obligated to ask this question of Diffusion in a Binary Gas Mixture topic in division Diffusion in Solids and Molecular Diffusion in Fluids of Mass Transfer