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Chemical Engineering - Mass Transfer

Exercise : Mass Transfer - Section 8
16.
Heat load in a cooling tower
means the amount of heat thrown away (KCal/hr.) by the cooling tower.
is equal to the number of kg, of water circulated times the cooling range.
both (a) & (b).
neither (a) nor (b).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
In case of absorption with exothermic reaction, for fluids having
Pr = Sc; percentage change in heat and mass transfer flux will be the same for a given change in the degree of turbulence.
Pr = Sc = 1; total mass, momentum and thermal diffusivity will be the same.
both (a) and (b)
Pr = Sc ; there won't be any change in heat and mass transfer flux with changes in degree of turbulence.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
Detergent solution is dried to a powder in a
spray dryer
spouted bed dryer
tunnel dryer
pan open to atmosphere
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
Which of the following mixtures does not form an azeotrope at atmosheric pressure?
Water-alcohol
Methyl alcohol-acetone
Butyl acetate-water
None of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
During bottling of cold drinks (e.g. Pepsi), the main resistance to mass transfer for the absorption of carbon dioxide in water lies in the
gas film
liquid film
liquid-gas interface
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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