Chemistry · May / June 2025 · Paper 11 · Question 36

The flowchart shows some reactions of hydrocarbons. [flowchart: saturated hydrocarbon with large molecules --process 1--> unsaturated hydrocarbons with small molecules --+ H2, condition 2--> saturated hydrocarbons with small molecules] Which row is correct?

1. Acracking; heat with nickel catalyst
2. Bfractional distillation; heat with acid catalyst
3. Ccracking; heat with acid catalyst
4. Dfractional distillation; heat with nickel catalyst

As printed in the paper