Question

Statement 1: $Al(OH)_{3}$ is insoluble in $NH_{4}OH$ but soluble inNaOH
Statement 2: NaOH is a stronger base.

• A. If both Statement 1 and Statement 2 are true and the statement 2 is the correct explanation of the statement 1.
• B. Ifboth Statement 1 and Statement 2 are true but statement 2 is not the correct explanation of the statement 1.
• C. If Statement 1 is true but Statement 2 is false.
• D. If Statement 1 is false but Statement 2 is true.

Answer 1

Answer: (B)

Both are correct statements but statement 2 is not the correct explanation of statement 1.
$Al(OH)_{3}$ forms soluble complex with NaOH and not with
$NH_{4}OH.$
$Al(OH)_{3} + OH^{-} \to [Al(OH)_{4}]^{-}$