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Question

Assertion :Aqueous solution of hydrogen peroxide is kept in the glass or metal container containing some urea or phosphoric acid. Reason: Urea or phosphoric acid acts as a negative catalyst for the decomposition of hydrogen peroxide.

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
Assertion is incorrect but Reason is correct
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Solution

The correct option is D Assertion is incorrect but Reason is correct
Kept in plastic or wax-lined glass containing urea or phosphoric acid, because traces of alkali metal ions from the glass and metal ions from the metal surface respectively can catalyse the explosive decomposition of H2O2.

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