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MCQ
Which hydroxides dissolve in excess NaOH solution?
Unit-18 Qualitative Anaylsis
A Cu(OH)2 and Fe(OH)3
B Al(OH)3 and Zn(OH)2
C Ca(OH)2 and Ba(OH)2
D AgOH and NH4OH
Explanation

Al and Zn hydroxides are amphoteric and dissolve in excess NaOH.

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