GATE CH · 2019 · CH
Question 50: Mass Transfer
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Question 50
CHNAT2 marksNeeds review
Two spherical camphor particles of radii 20 cm and 5 cm, far away from each other, are undergoing sublimation in a stream of air. The mass transfer coefficient is proportional to
, where
is the radius of the sphere at time
. Assume that the partial pressure of camphor far away from the surface of the particle is zero. Also, assume quasi-steady state, identical ambient conditions, and negligible heat effects. If
and
are the times required for complete sublimation of the 20 cm and 5 cm camphor particles, respectively, the ratio
is __________ (rounded off to one decimal place).Log in to check the answer
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2019CH
GATE CH 2019 · Paper 1
Chemical Engineering · Original paper archive
- Section
- Chemical Engineering
- Question type
- Numerical answer (NAT)
- Marks
- 2 marks
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