What this practice covers
These questions are drawn from past IB Economics papers and filtered to demand. 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 concept drills →
What examiners see students get wrong here
These are the errors that cost marks on demand, taken from our own topic notes. Read them before you practise and you will recognise the traps in the questions.
- Calling a shift a "movement", or vice versa.
- Writing that a price change "increases demand", it changes quantity demanded.
- Forgetting to state ceteris paribus when explaining the law of demand.
- Explaining the downward slope with only one of the income and substitution effects.
- Confusing an inferior good (negative income effect) with a cheap or low-quality good.
- Shifting demand for a good when its own price changed.
- (HL) Reading a as a price or b as an elasticity; they are the intercept and the slope parameter.
Revise it first
If any of the above is unfamiliar, work through the notes before practising: Demand revision notes.