In McCabe-Thiele method of theoretical plate calculation for a distillation column, the operating lines of stripping and rectifying sections coincide with the diagonal at ________________ reflux ?
Correct answer: A. Total
- A. Total
- B. Minimum
- C. Operating
- D. Maximum permissible
Explanation
At total reflux, no feed or products are withdrawn, so both operating lines reduce to the diagonal y = x. This condition gives the minimum number of theoretical plates for a specified separation.
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