What this practice covers
These questions are drawn from past CIE 0620 Chemistry papers and filtered to oxides. 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 oxides, taken from our own topic notes. Read them before you practise and you will recognise the traps in the questions.
- Classifying an oxide from its formula rather than from whether the element is a metal.
- Calling carbon monoxide acidic because carbon dioxide is.
- Saying amphoteric oxides are neutral.
- Saying every metal oxide dissolves to give an alkali, when most metal oxides are insoluble.
- Forgetting that an acidic oxide reacting with an alkali still gives a salt and water.
- Naming aluminium oxide as basic only, or zinc oxide as acidic only.
- Giving the acid rain gases as carbon dioxide, when the pair examined is sulfur dioxide and the nitrogen oxides.
Revise it first
If any of the above is unfamiliar, work through the notes before practising: Oxides revision notes.