Question

Assertion (A): $Al(OH{)}_3$ is amphoteric in nature.
Reason (R): $Al(OH{)}_3$ is $H^{+}$ donor acid as well as $O{H}^{-}$ donor base.

• A. (A) is correct; (R) is correct and (R) correctly explains (A).
• B. (A) is correct; (R) is correct and (R) doesn't explain (A) correctly.
• C. (A) is correct; (R) is incorrect.
• D. (A) is incorrect; (R) is correct.

Answer 1

The correct option is C (A) is correct; (R) is incorrect.

$Al(OH{)}_3$ sure is amphoteric. It can react with both an acid as well as a base:

$Al(OH{)}_3+3HCl⟶AlC{l}_3+3H_{2}O$
$Al(OH{)}_3+3NaOH⟶Na[Al\left(OH{)}_4\right]$

It is not a $H^{+}$ donor. Hence assertion is true but the reason is false.