1.

Which of the following hydroxide is acidic?

Answer»

`AL(OH)_(3)`
`Ca(OH)_(3)`
`Tl(OH)_(3)`
`B(OH)_(3)`

Solution :`B(OH)_(3)` is acid because it can TAKE `OH^(-)` ions
`H_(3)BO_(3) or B(OH)_(3)+OH^(-) to B(OH)_(4)^(-)`


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