MCQ
Which one is not an acid salt
- ✓$NaH_2PO_2$
- B$NaH_2PO_3$
- C$NaH_2PO_4$
- DNone of these
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Reason : Cuprous ion $(Cu^+)$ is colourless whereas cupric ion $(Cu^{2+})$ is blue in the aqueous solution.