+1 vote
in Mass Transfer by (37.1k points)
Total cost will be minimum at

(a) Minimum reflux ratio

(b) Maximum reflux ratio

(c) Optimum reflux ratio

(d) None of the mentioned

I had been asked this question in a dream while sleeping

The doubt is from Cost Variance with Reflux Ratio in portion Distillation of Mass Transfer

1 Answer

0 votes
by (39.8k points)
Correct choice is (c) Optimum reflux ratio

Best explanation: At optimum reflux ratio, the fixed cost and the operating cost will be equal so the total cost will be minimum.

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