Two miscible liquids with close boiling points are separated by:
APlain sieving
BFractional distil
CSimple filtering
DUsing a magnet
Answer & Solution
Correct answer: B. Fractional distil
1. Ordinary distillation needs a large difference in boiling points.
2. Petroleum fractions differ by less than 25 degrees.
3. They are separated by fractional distillation.
4. So the answer is fractional distillation.
_Source: NCERT Class 9 Science, Ch 5 'Exploring Mixtures and their Separation'_
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