Dropwise condensation is promoted on a/an ______________ surface?
Correct answer: B. Oily
- A. Glazed
- B. Oily
- C. Coated
- D. Smooth
Explanation
Dropwise condensation requires a non-wetting surface so that condensate forms separate droplets rather than a continuous film. An oily surface reduces wetting and therefore promotes dropwise condensation.
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