Question

Exercise
A. Tick (/) the correct option.
1. An earthquake is a change that is said to be:
(a) reversible
(b) beyond our control
(c) non-periodic
(d) desirable
2. Rusting of iron is a:
(a) slow chemical change
(b) fast physical change
(c) reversible change
(d) exothermic change
3. Burning of a matchstick is a:
(a) fast physical change
(b) fast chemical change
(c) slow chemical change
(d) periodic change
4. Production of hydrogen and oxygen from water is a:
(a) physical change
(b) chemical change
(c) reversible change
(d) none of these
please give answer me it's urgent please​

Answer 1

Answer:

a

b

c

a

this is the correct answer

Answer 2

1. c) non periodic
2. a) slow chemical change
3. b) fast chemical change
4. b) chemical change