The pair of amphoteric hydroxides is ________________.

A l (O H)_{3}, L i O H

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B e (O H)_{2}, M g (O H)_{2}

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B (O H)_{3}, B e (O H)_{2}

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Z n (O H)_{2}, B e (O H)_{2}

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Solution

The correct option is D $Z n (O H)_{2}, B e (O H)_{2}$
$B e (O H)_{2}$ and $Z n (O H)_{2}$ are amphoteric hydoxides in nature. They react with acid as well as base.
$B e (O H)_{2} + 2 H C l \to B e C l_{2} + 2 H_{2} O$
$B e (O H)_{2} + 2 N a O H \to N a_{2} B e O_{2} + H_{2} O$
$Z n (O H)_{2} + 2 H C l \to Z n C l_{2} + 2 H_{2} O$
$Z n (O H)_{2} + 2 N a O H \to N a_{2} Z n O_{2} + 2 H_{2} O$

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B e (O H)_{2}

B e (O H)_{2}

Read the above assertion and reason and choose the correct statement regarding it.

B e (O H)_{2}

B e (O H)_{2}

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