JEE Main levelSingle correct optionDifficulty 2 of 3si086
Bromobenzene (immiscible with water) is steam distilled at 1atm. The mixture distils at a temperature that is
Aexactly 100∘C
Bbelow 100∘C, since the two vapour pressures add up to the atmospheric pressure
Cbetween 100∘C and the boiling point of bromobenzene
Dabove the boiling point of bromobenzene
Answer: B
For immiscible liquids each exerts its own vapour pressure, and the mixture boils when pwater+porganic=Patm. This happens below the boiling point of water, hence below 100∘C.