Subject :NSO Class : Class 6
Which of the following changes can be reversed?
(1) Curd into milk
(2) Ice into water
(3) Blowing of a balloon
(4) Cutting of trees
A(1) and (2)
B(2) and (3)
C(3) and (4)
D(2), (3) and (4)
Letâs see which of the following changes can be reversed:(1) Curd into milk ----- Curd cannot be changed back to Milk.(2) Ice into water ----- If Ice is left at normal temperature for some time, it will melt into water.(3) Blowing of a balloon ----- If we blow a balloon, but donât tie its mouth, the air will escape from the balloon, and it will get back to its previous shape.(4) Cutting of trees ----- Once a tree is cut down, it cannot be put back together as a whole tree again.