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Q.

Example of a chemical change

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a

Change of ice into water

b

Changes in Atti-Patti

c

Explosion of fire works

d

All the above

answer is C.

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Detailed Solution

In explosion of fireworks a new substance is formed like ash so it is a chemical change

EX:  2MgMagnesium ribbon+O2→2MgOAsh

Change of ice into water, changes in atti-patti are physical changes because no new substance is formed.

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