Question

. Give four examples of the change which :
(a) cannot be reversed
(b) can be reversed.
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Answer 1

Explanation:

which may not be reversed is we may not convert curd into milk.

which may reverse is plastic bottles...

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Answer 2

Answer:

cannot be reversed=

a) Rusting of iron

b) cooking of food

c) growth in plants and animals

d) burning of paper

can be reversed =

a) kicking a football

b) water into ice

c) water into gas

d) heating of water

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