Which of the following is not a valid assumption in continuous...

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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?

A. Sensible heat changes for vapour & liquid are negligibly small

B. Reflux is not a saturated liquid

C. Molar latent heat of the two components are equal

D. Heat of mixing of normal liquid is assumed to be zero

Answer: Option B

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