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

Explanation:

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