Which of the following changes are Reversible and Irreversible?
(a) Blowing of a balloon
(b) Folding a paper to make a toy aeroplane
(c) Rolling a ball of dough to make roti
(d) Baking cake in an oven
(e) Drying a wet cloth
(f) Making biogas from cow dung
(g) Burning of a candle
Reversible changes :
(a) Blowing of a balloon,
(b) Folding paper to make a toy aeroplane
(c) Rolling a ball of dough to make roti,
(e) Drying a wet cloth.
Irreversible changes :
(d) Baking of a cake,
(f) Making biogas from cow dung,
(g) Burning of a candle.