What this practice covers
These questions are drawn from past Cambridge IGCSE papers and filtered to supply. You answer, you find out immediately whether you were right, and you get the reasoning for the correct option and for each distractor. Wrong answers go to a mistakes locker so you can come back to exactly those.
Practice is free. You need an account only so your progress and your mistakes are still there next time.
Start practising Paper 1 MCQs →
What examiners see students get wrong here
These are the errors that cost marks on supply, taken from our own topic notes. Read them before you practise and you will recognise the traps in the questions.
- Saying a price rise "increases supply", it increases quantity supplied.
- Treating an indirect tax as a demand-side change. It shifts supply.
- Shifting supply when the good's own price changed.
- Shifting supply for a change in consumer incomes or tastes; those are demand factors.
- Forgetting to label curves S1 and S2 when showing a shift.
Revise it first
If any of the above is unfamiliar, work through the notes before practising: Supply revision notes.