Which one of the following metallic hydroxides does not dissolve in so

1.	Which one of the following metallic hydroxides does not dissolve in sodium hydroxide solution ?
Answer» `Al(OH)_(3)` `PB(OH)_(2)` `Fe(OH)_(3)` `ZN(OH)_(2)`. SOLUTION :`Fe(OH)_(3)` does not DISSOLVE in NaOH(aq). All other hydroxides are amphoteric in nature and dissolve in NaOH.

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