Chemistry · Oct / Nov 2025 · Paper 12 · Question 14
5070Physical and chemical changes
Two changes are described. change 1 Copper is added to concentrated nitric acid. Nitrogen dioxide is produced. change 2 Concentrated sulfuric acid is added to sugar. The change that occurs cannot be reversed. Which row is correct?
- Achemical change / chemical change
- Bchemical change / physical change
- Cphysical change / chemical change
- Dphysical change / physical change
As printed in the paper
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Correct answer: A. chemical change / chemical change
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