Q. Pick out the wrong statement:

• (A) Reboiler is not used in open steam distillation
• (B) The separation of solutes of different molecular sizes in a liquid solution by use of a suitable membrane is called dialysis
• (C) Freeze drying is used for the drying of fish
• (D) Fenske-Underwood equation is used for calculating theoretical number of plates in a distillation column at normal operating reflux condition