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Chemistry
Assertion: Al(OH)3 is insoluble in NH4OH but soluble in NaOH . Reason: NaOH is strong alkali
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Q.
Assertion :
$Al(OH)_3$ is insoluble in $NH_4OH$ but soluble in $NaOH$ .
Reason :
$NaOH$ is strong alkali
The p-Block Elements
A
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
57%
B
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
21%
C
If the Assertion is correct but Reason is incorrect
14%
D
If both the Assertion and Reason are incorrect
0%
E
If the Assertion is incorrect but the Reason is correct.
0%
Solution:
$Al(OH)_3$ is soluble in strong alkali like $NaOH$ because of formation of meta-aluminate ion
$NaOH + Al(OH)_3 \rightarrow NaAlO_2 + 2H_2O$