Chemistry · Oct / Nov 2023 · Paper 12 · Question 34

In the fractional distillation of petroleum, different fractions are obtained at the top and bottom of the fractionating column. Which properties does the fraction obtained at the top of the fractionating column have, compared with the fraction obtained at the bottom? 1 higher viscosity 2 lower boiling point 3 lower volatility 4 shorter chain length

1. A1 and 2
2. B1 and 3
3. C2 and 4
4. D3 and 4

As printed in the paper