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Question

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

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
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 NaOH (base) as well as HCl (acid), hence are amphoteric:
Sn+2NaOH+H2ONa2SnO3+2H2
Sn+2HClSnCl2+H2
Similarly with lead.
Pb+2NaOH+H2ONa2PbO3+2H2
Pb+2HClPbCl2+H2
Hence option A is correct.

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