• # question_answer Which one of the following is not an amphoteric substance [KCET 2004] A) $HN{{O}_{3}}$ B) $HCO_{3}^{-}$ C) ${{H}_{2}}O$ D) $N{{H}_{3}}$

Correct Answer: A

Solution :

$HN{{O}_{3}}$ is the strong oxidising acid so it react with alkali while rest can be react with both and alkali.

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