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Reaction with Basic Salts

The substance...

Question

The substance/s which react/s with hot conc. $N a O H$ solution and undergoes a neutralization reaction is___________.

A

A l

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B

A l_{2} O_{3}

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C

A l (O H)_{3}

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D

none of these

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Solution

The correct option is B $A l_{2} O_{3}$
Aluminium oxide $A l_{2} O_{3}$ displays acidic properties and thus undergoes neutralisation reaction with hot conc.NaOH as:
$A l_{2} O_{3} + 2 N a O H + 3 H_{2} O \to 2 N a A l (O H)_{4}$

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