Question

a.
Choose the correct option
1. Which of the following is not observed in a reversible change?
a.Change in shape
b. Change in size
c.Change in composition
d.Change in appearance
2. Which of these is not a reversible change?
a.Coiling the string
b.Folding of paper
c.Freezing of water
d.Burning of coal
3. Which of these is not an irreversible change?
a.Rusting of iron
b. Burning of paper
c.Melting of ice cream
d. Ripening of fruits
4. Which of these changes are caused by expansion and contraction?
a.opening of a tightly closed lid of a jar
b.Folding of paper
c.Burning of incense stick
d.Rusting of iron​

Answer 1

Answer:2. Which of these is not a reversible change
Explanation:

Answer 2

Answer:

1 change in composition 2 burning of coal 3 melting of ice cream