What this practice covers
These questions are drawn from past CIE 0620 Chemistry papers and filtered to noble gases. 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.
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What examiners see students get wrong here
These are the errors that cost marks on noble gases, taken from our own topic notes. Read them before you practise and you will recognise the traps in the questions.
- Writing the noble gases as diatomic molecules such as Ne<sub>2</sub>.
- Saying they are unreactive because they have eight outer electrons, and then being caught by helium, which has two.
- Saying helium is used in balloons only because it is light, without mentioning that it does not burn.
- Saying argon is used in lamps because it glows, which is neon's use.
- Claiming the noble gases become more reactive down the group.
- Explaining unreactivity as "they are stable" without linking it to losing, gaining or sharing electrons.
Revise it first
If any of the above is unfamiliar, work through the notes before practising: Noble gases revision notes.