Chemistry · Oct / Nov 2024 · Paper 12 · Question 35

Petroleum is separated in a fractionating column. Which statements are correct? 1 The compounds at the top of the column are more volatile and have lower boiling points. 2 The compounds at the bottom of the column are more viscous. 3 The chain length of the molecules at the bottom of the column are shorter than those at the top.

1. A1, 2 and 3
2. B1 and 2 only
3. C1 and 3 only
4. D2 and 3 only

As printed in the paper