Which of the following is a physical change?
  1. Rusting of iron
  2. Combustion of magnesium ribbon
  3. Burning of candle
  4. Melting of wax

AcademicChemistryNCERTClass 7

Correct answer: (d) Melting of wax

Explanation: Melting of wax is a physical change. All other changes are chemical changes.

Updated on 10-Oct-2022 13:21:31