Question

[TBQ.VIII.1]

Give one example in each case that
happens around you.
a. Slow and fast change
b. Reversible and irreversible change
c. Physical and chemical change
d. Natural and man-made change
e. Desirable and undesirable change

Answer 1

S.NO.	Changes	Examples
a	Slow change	growth of nail and hair
Fast change	burning of a paper
b	Reversible change	melting of ice
Irreversible change	change of milk into curd.
c	Physical change	drying of cloth
Chemical change	rusting of iron
d	Natural change	rotation of earth
Man-made change	construction of building
e	Desirable change	cooking of food
Undesirable change	deforestation.