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Q#1 Distillation GATE CH 2024 MCQ +1 mark -0.33 marks

A homogenous azeotropic process separates an azeotropic AB binary feed using a heavy entrainer, E, as shown in the figure. The loss of E in the two product streams is negligible so that E circulates around the process in a closed- circuit. For a distillation column with fully specified feed(s), given operating, a single distillate stream and a single bottoms stream, the degrees of freedom equal to 2. For the process in the figure with a fully AB feed stream and given column operating pressures, the steady-state degrees of freedom equals

6

5

4

3

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