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Question

Study the changes given in the box.

Identify the chemical changes. 


A
Only (i) and (ii)
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B
Only (ii) and (iii)
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C
Only (i) and (iii)
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D
(i), (ii) and (iii)
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Solution

The correct option is A Only (i) and (ii)
Chemical changes involve the formation of a new compound from the reactants. As, magnetization of iron doesn’t involve formation of a new compound, so it is not a chemical change. It just changes the alignment of magnetic domains inside the compound. In other two cases new compounds are formed, so they are chemical changes.

NCERT Previous Years Papers

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