Which of the following is a dibasic acid?

1.	Which of the following is a dibasic acid?
A.	\[HCl\]
B.	\[{{H}_{3}}P{{O}_{4}}\]
C.	Abase
D.	\[{{H}_{2}}S{{O}_{4}}\]
Answer» E.

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Which of the following is a dibasic acid?

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