Chemical Engineering MCQs

Chemical potential (an intensive property) of a substance is a force that drives the chemical system to equilibrium and is equal to its partial molar properties. The reatio of chemical potential to free energy of a pure substance at oconstant temperature and pressure is

by
A. 0
B. 1
C. ∞
D. None of these
✅ The correct answer is option B.

Angled baffles are preferred in the agitation tank to control the swirling action; if the viscosity of the liquid to be mixed is about 200 poise. However, the baffle may be completely eliminated for mixing liquids having viscoisty above __________ poise.

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300
600
1000
1500
✅ The correct answer is option B.

In a shell and tube heat exchanger, the overall heat transfer co-efficient is proportional to the tube side (volumetric flow rate)0.8. This is valid, only when the ratio of the tube side film resistance to the total resistance is almost equal to

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∞
1
20.8
2
✅ The correct answer is option B.

Tube side pressure drop in a 1-2 heat exchanger (for turbulent flow of fluids through the tubes) is about __________ times, that in a 1-1 heat exchanger having the same size & number of tubes and operated at the same liquid flow rate.

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2
1-Feb
4
8
✅ The correct answer is option D.

Which of the following is not a graphical method (but is an analytical method) for the calculation of theoretical number of stages in case of continuous binary distillation?

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Sorel-Lewis method.
McCabe-Thiele’s method.
Ponchon-Savarit method.
none of these.
✅ The correct answer is option A.