Oxides of which of the following metals are amphoteric oxides?
(I) Fe
(II) AL
(III) Zn
(IV) Mn

Options

A. Both (I) and (II)
B. Both (II) and (III)
C. Both (I) and (IV)
D. Both (II) and (IV)

Answer

B

Explanation

The metal oxides show both acidic and basic nature are known as amphoteric oxides. For ex, aluminium oxide and zinc oxide are amphoteric oxides.
The reaction of aluminium oxide with acids and bases is given below.
`Al_(2)O_(3) + 6HCl rarr 2AlCl_(3) + 3H_(2)O`
`Al_(2)O_(3) + 2NaOH rarr 2NaAlO_(2) + H_(2)O`