In which one of the following cases do both physical and chemical changes take place?

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Q: 71 (CDS-II/2023)
In which one of the following cases do both physical and chemical changes take place?

question_subject: 

Science

question_exam: 

CDS-II

Burning of a candle involves both physical changes (melting of wax) and chemical changes (combustion of wax producing heat, light, carbon dioxide, and water vapor).