Chemistry · May / June 2020 · Paper 11 · Question 35

The molecules of two hydrocarbon compounds X and Y each contain only four carbon atoms. X is saturated and Y is unsaturated. Which statements are correct? 1 Under suitable conditions Y polymerises. 2 The complete combustion of 1 mole of Y produces more carbon dioxide than the complete combustion of 1 mole of X. 3 One molecule of Y contains more hydrogen atoms than one molecule of X.

1. A1 only
2. B3 only
3. C1 and 2
4. D2 and 3

As printed in the paper