Assertion :A 30% solution of $H_{2} O_{2}$ is marketed as '100 volume' hydrogen peroxide. Reason: 1 L of 30% $H_{2} O_{2}$ will give 100 mL of oxygen at STP.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is C Assertion is correct but Reason is incorrect
A $30$ % $H_{2} O_{2}$ solution means $30 g$ of $H_{2} O_{2}$ in a $100$ ml of $H_{2} O_{2}$ solution (i.e. $100$ volume).
One milliliter of 30% $H_{2} O_{2}$ solution will give 100 mL of oxygen at STP.
Thus the Assertion is correct but the Reason is incorrect.

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