State True or False.
$A l_{2} O_{3}$ in aqueous $N a O H$ forms $N a [A l (O H)_{4}]$ .

True

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False

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Solution

The correct option is A True
Reaction:
$A l_{2} O_{3}$ in acqeous $N a O H$ forms $N a [A l (O H)_{4}]$ according to the following reaction:
$2 N a O H + 2 A l_{2} O_{3} + 3 H_{2} O \to 2 N a [A l (O H)_{4}]$
Hence the given statement is true.

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