Question

(a) Select a chemical change from the following
(1) Melting of ice
(ii)Burning of petrol in a car engine
(If Iron piece becomes red hot on heating
(iv) Rusting of iron​

Answer 1

Answer:

burning of petrol in car engine

Answer 2

Answer:

Rusting of iron and burning of petrol are the chemical changes as in melting of ice and the iron piece becoming hot on heating, there is no change in the chemical composition of the substance.