1.

Which one of the following anions is not easily removed from aqueous solutions by precipitation [IIT 1995]

A. \[C{{l}^{-}}\]
B. \[NO_{3}^{-}\]
C. \[CO_{3}^{-2}\]
D. \[SO_{4}^{-2}\]
Answer» C. \[CO_{3}^{-2}\]


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