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p-Block Elements - I
medium
Assertion : $Al(OH)_3$ is insoluble in $NH_4OH$ but soluble in $NaOH$ .
Reason : $NaOH$ is strong alkali.
A
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
B
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
C
If the Assertion is correct but Reason is incorrect.
D
If both the Assertion and Reason are incorrect.
(AIIMS-1997)
Solution
$Al(OH)_3$ is soluble in strong alkali like $NaOH$ because of formation of meta-aluminate ion
$NaOH + Al(OH)_3 \to NaAlO_2 + 2H_2O$
Standard 11
Chemistry
