The given apparatus shows a method to separate ethanol-water mixture.
Which of the following statements are correct?
I. During the process, the liquid with the highest boiling point distils over first.
II. Ethanol reaches the upper part of the column first.
III. Thermometer first shows a constant reading at `100^(@)C`.
IV. Ethanol vapours and water vapours both rise up the column but water vapours condense in the fractionating column and drop back into the distillation flask.
