Pick out the wrong statement.

Question

Options:

A . By increasing the number of shell passes, the temperature cross in a shell and tube heat exchanger can be prevented

B . An underdesigned steam trap will back up the condensate instead of discharging it out

C . Steam condensate is corrosive because of the presence of dissolved oxygen in it

D . Film boiling is desirable in commercial equipments due to high heat transfer rate at low temperature drop

Answer: Option D

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