Assertion : $H_{3} P O_{4}$ and $H_{2} S O_{4}$ are known as polybasic acids. Reason: They have two or more than two protons per molecule of the acid.

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 A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Polybasic acids are acids with more than one replaceable hydrogen atom, for example: Dibasic sulphuric acid ( $H_{2} S O_{4}$ ) and tribasic phosphoric (V) (orthophosphoric) acid ( $H_{3} P O_{4}$ ).

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