Column-I Column-II
(In the aqueous medium the ion can be)
A) ${HPO}_{4}^{- 2}$ P) Arrhenius acid
B) ${CO}_{3}^{- 2}$ Q) Bronsted base
C) $H_{2} {PO}_{3}^{- 1}$ R) Amphoteric
D) $H_{2} {PO}_{2}^{- 1}$ S) Bronsted acid
A B C D
1. R P Q,R,S R
2. P,Q,R,S Q P,Q,R,S Q
3. P P Q S
4. R S Q P

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answer is B.

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Detailed Solution

${HPO}_{4}^{2 -}$ can give and lose H⁺
${CO}_{3}^{2 -}$ can accept H⁺
$H_{2} {PO}_{3}^{-}$ can give and lost H⁺
$H_{2} {PO}_{2}^{-}$ can accept H⁺

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	Column-I		Column-II (In the aqueous medium the ion can be)
A)	${HPO}_{4}^{- 2}$	P)	Arrhenius acid
B)	${CO}_{3}^{- 2}$	Q)	Bronsted base
C)	$H_{2} {PO}_{3}^{- 1}$	R)	Amphoteric
D)	$H_{2} {PO}_{2}^{- 1}$	S)	Bronsted acid