Identify the wrongly matched pair.

Rusting of iron - Physical change

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Breaking of glass - Physical change

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Photosynthesis - Chemical change

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Folding a paper - Physical change

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Solution

The correct option is A Rusting of iron - Physical change
Photosynthesis and rusting of iron involves formation of new substances. Hence, both of them are chemical changes.
However, folding a paper and breaking of glass does not involve formation of any new substance. Hence, they are both physical changes.

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Similar questions

So, rusting of iron is a chemical change or physical change???

H_{2} O,

Rusting of iron is both chemical and physical change . Why?

	I		II
(a)	Physical change	(i)	Curdling of milk
(b)	Chemical change	(ii)	Demagnetisation of magnets
		(iii)	Digestion of food
		(iv)	Crystallisation of substance
		(v)	Rusting of iron

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