Assertion :Oxides and hydroxides of certain metals i.e. zinc, aluminum are amphoteric. Reason: They react with acids and alkalis to give salts and water.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Zinc and aluminium oxides and hydroxides are amphoteric in nature.
For example:

$Z n O + 2 H C l \to Z n C l_{2} + H_{2} O$ -------- (basic nature)
$Z n O + 2 N a O H \to N a_{2} Z n O_{2} + H_{2} O$ ----- (acidic nature)

on reaction with acids and alkali they give salts and water.

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