Question

y heat released A. ON he heato CHECK YOUR VI IND POWER Tick (V) the correct option. 1. Which of the following is a chemical change? (a) Making a paper aeroplane (b) Making a paper boat (c) Burning of a paper (d) Inflating a balloon 2. Which of these is a reversible change? (a) Changing of milk into curd (b) Growing of a plant (c) Growing of a baby into an adult (d) Melting of ice 3. Which of these is not a physical change? (a) Stretching a rubber band (b) Melting of butter (c) Burning of a piece of coal (d) Changing of water into water vapour 4. Formation of curd from milk is a (a) Physical change (b) Chemical change (c) Both of these (d) None of these als by a . now th: apour​

Answer 1

Explanation:

1) Burning of paper

2)Melting of ice

3) Burning of piece of coal

4)Chemical change