Assertion :Zinc liberates hydrogen gas when reacted with dilute hydrochloric acid, whereas copper does not. Reason: Zinc is above hydrogen in reactivity series.

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.
The reactivity series follows the order:
$Z n > F e > F b > H > C u > H g$

Zinc is above hydrogen in reactivity series. Any element that is above hydrogen in reactivity series can displace hydrogen from dilute hydrochloric acid solution.

$Z n + 2 H C l (d i l) \to Z n C l_{2} + H_{2}$

Copper is below hydrogen in reactivity series. Any element that is below hydrogen in reactivity series can not displace hydrogen from dilute hydrochloric acid solution.

Thus, both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Similar questions

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Reason (R) We cannot determine order from balanced chemical equation.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
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