Question

Q24. Which of the following are chemical changes? (a)Rusting of iron (b) Mixing of iron filings and sand

Answer 1

Answer:

Rusting of Iron

Explanation:

As because if the iron rust in the moisture then it can't be change..

So as we know

A change which alerts the specific properties of a substance by bringing about a change in its molecular composition followed by a change of state

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Answer 2

a) rusting of iron

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