Process Equipment and Plant Design
The centre to centre distance between two consecutive baffles in a shell and tube heat exchanger is called the baffle pitch or baffle spacing, which is more than 1/5th the I.D. of the shell. Which of the following is not a function of the baffles?

To reduce the induced vibration in the tubes
To increase the tube side heat transfer co-efficient by inducing turbulence
To provide support to the tube bundle
To increase the residence time of shell side fluid

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Process Equipment and Plant Design
Pick out the wrong statement about routing of fluids in a shell and tube heat exchanger.

The viscous fluid should be routed through the shell side
The corrosive and fouling fluid should be preferably routed through the tubes
Lower flow rate fluid should be routed through the shell side
Higher pressure fluid stream should be routed through the shell side

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Process Equipment and Plant Design
Pick out the wrong statement about distillation operation

Distillation under vacuum is a substitute for steam distillation
Flash distillation, differential distillation & steam distillation are all continuous distillation processes
In flash (equilibrium) distillation, a definite fraction of liquid is vaporised in such a way that the evolved vapour & residual liquids are in equilibrium with each other
In differential (simple) distillation, the vapour is removed as soon as it is formed without appreciable condensation

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