Process Equipment and Plant Design
Pick out the wrong statement pertaining to the design of a basket type evaporator.

It is used for high viscosity liquor having large rate of scaling
There is no central downtake
The tube bundle is suspended on bracket
Downtake is formed by the annular space between the bundle and the shell

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Process Equipment and Plant Design
Which of the following is not a valid assumption in continuous binary distillation for calculating the number of equilibrium stages by Mc-Cabe-Thiele's method?

Heat of mixing of normal liquid is assumed to be zero
Molar latent heat of the two components are equal
Sensible heat changes for vapour & liquid are negligibly small
Reflux is not a saturated liquid

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