Which of the following provides maximum contact surface for a liquid-vapour system ?
Correct answer: C. Packed tower
- A. Sieve-plate column
- B. Bubble-cap plate column
- C. Packed tower
- D. Wetted wall column
Explanation
Packing breaks the liquid into a thin film over a large wetted area, providing greater vapour-liquid contact area than ordinary trays or a wetted-wall column. Hence packed towers are preferred when maximum interfacial area is required.
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