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Question
Pick out the wrong statement.
Options:
A .  In case of heat transfer by purely forced convection, GR/Re² ≤ 1.
B .  The equivalent diameter of heat transfer for a duct of square cross-section (having each side as 'x') is equal to 4x.
C .  Distillation process is not the same as evaporation.
D .  The effectiveness of nucleate boiling depends basically on the ease with which the bubbles are formed and detached from the heating surface.
Answer: Option B
Answer: (b).The equivalent diameter of heat transfer for a duct of square cross-section (having each side as 'x') is equal to 4x.

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