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Question

Assertion :A 30% solution of H2O2 is marketed as '100 volume' hydrogen peroxide. Reason: 1 L of 30% H2O2 will give 100 mL of oxygen at STP.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
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% H2O2 solution means 30g of H2O2 in a 100 ml of H2O2 solution (i.e. 100 volume).
One milliliter of 30% H2O2 solution will give 100 mL of oxygen at STP.
Thus the Assertion is correct but the Reason is incorrect.

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