Assertion - Sn- and - Pb- are amphoteric - Reason- Both metals reacts with - NaOH- -base- as well as - HCl- -acid- hence are amphoteric-Both Assertion and Reason are correct and Reason is the correct explanation for AssertionBoth Assertion and Reason are correct but Reason is not the correct explanation for AssertionAssertion is correct but Reason is incorrectBoth Assertion and Reason are incorrect

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Physical and Chemical Properties of Hydrogen

Assertion : ...

Question

Assertion : $S n$ and $P b$ are amphoteric . Reason: Both metals reacts with $N a O H$ (base) as well as $H C l$ (acid), hence are amphoteric.

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
Both metals reacts with $N a O H$ (base) as well as $H C l$ (acid), hence are amphoteric:
$S n + 2 N a O H + H_{2} O \to N a_{2} S n O_{3} + 2 H_{2}$
$S n + 2 H C l \to S n C l_{2} + H_{2}$
Similarly with lead.
$P b + 2 N a O H + H_{2} O \to N a_{2} P b O_{3} + 2 H_{2}$
$P b + 2 H C l \to P b C l_{2} + H_{2}$
Hence option A is correct.

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Assertion :Sn and Pb are amphoteric . Reason: Both metals reacts with NaOH (base) as well as HCl (acid), hence are amphoteric.

Assertion : $S n$ and $P b$ are amphoteric . Reason: Both metals reacts with $N a O H$ (base) as well as $H C l$ (acid), hence are amphoteric.