The pair of amphoteric hydroxides is

Options

A. `Al(OH)_(3), LiOH`
B. `Be(OH)_(2), Mg(OH)_(2)`
C. `Al(OH)_(3), Be(OH)_(2)`
D. `Ni(OH)_(2), Zn(OH)_(2)`

Answer

C

Explanation

Both `Be(OH)_(2)` and `Al(OH)_(3)` are amphoteric in nature as they react with acids as well as bases to form salts.
`Be(OH)_(2) + 2HCl rarr BeCl_(2) + 2H_(2)O`
`Be(OH)_(2) + 2NaOH rarr Na_(2)BeO_(2) + 2H_(2)O`
`Al(OH)_(3) + 3HCl rarr AlCl_(3) + 3H_(2)O`
`Al(OH)_(3) + NaOH rarr NaAlO_(2) + 2H_(2)O`