When carbon dioxide is passed through a freshly prepared limewater, it turns milky. Identify the change involved.

Physical

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Chemical

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Periodic

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Temporary

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Solution

The correct option is B Chemical
When carbon dioxide is passed through freshly prepared limewater (calcium hydroxide) they react with each other to form calcium carbonate which is responsible for milky appearance. This can be represented as:

Carbon dioxide + Calcium hydroxide $\to$ Calcium carbonate + water

The given reaction involves a chemical change since new substances are formed.

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Similar questions

When carbon dioxide is passed through limewater, it turns milky due to the formation of ____________.

C O_{2}

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