Question

Select the chemical change from the following:
a) Tearing up a paper into pieces
b) Iron piece becomes red on strong heating c) Burning of petrol in a car engine
d) Melting of ice​

Answer 1

1.reversible physical

2. reversible physical

3. irreversible chemical

4. reversible physical

Answer 2

Answer:

a)irreversible change

b)reversible change

c) irreversible change

d)reversible change