Question

7. Which of the following is a physical change?

(a) Rusting of iron

(b) Combustion of magnesium ribbon

(c) Burning of candle

(d) Melting of wax​

Answer 1

Answer:

d)Melting of wax is a physical change and rest all are chemical change.

Answer 2

Answer:

Melting of wax

Explanation:

Rusting of iron, combustion and burning of the candle are chemical changes where produced cannot be converted into reactants.