Question

Which of the following changes cannot be reversed?

i) Blowing of a balloon

ii) Folding a paper to make a toy aeroplane

iii) Rolling a ball of dough to make roti

iv) Baking cake in an oven.​

Answer 1

iv is the correct answer

Answer 2

Answer :

(a) Can be reversed

(b) Can be reversed

(c) Can be reversed

(d) Cannot be reversed