Question 1
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
Question 8
Look at the figures given below, which show three situations (a) burning candle (b) an extinguished candle (c) melting wax. Which of these shows a reversible change and why?