Chemical Engineering - Mass Transfer

46.
Positive deviation from Raoult's law means a mixture whose total pressure is
greater than that computed for ideality.
less than that computed for ideality.
less than the sum of the vapour pressure of the components.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

47.
With increase in gas rate, the number of transfer units, NtoG, for a fixed degree of absorption by a fixed amount of solvent
increases
decreases
decreases linearly
remains unaffected
Answer: Option
Explanation:
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48.
Schmidt number is given by
Re.Pe
Sh x Pe
Re/Pe
Answer: Option
Explanation:
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49.
The caking of crystals can be prevented by
maintaining high critical humidity.
maintaining low critical humidity.
coating the product with inert material.
both (a) and (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.

50.
Prandtl number for water at 20°C is about
7
70
0.7
150.
Answer: Option
Explanation:
No answer description is available. Let's discuss.