Per NCERT, FRACTIONAL DISTILLATION is used when the boiling points of the liquids differ by approximately what amount?
ALess than 25 °C — for liquids with small boiling-point differences (e.g. crude petroleum fractions)
BExactly 50 °C
CNo difference at all
DMore than 100 °C
Answer & Solution
Correct answer: A. Less than 25 °C — for liquids with small boiling-point differences (e.g. crude petroleum fractions)
Per NCERT's Ready to Go Beyond box, fractional distillation handles small boiling-point differences (< 25 °C), as used in petroleum refineries.
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