Assertion : $C u$ doesn't give $H_{2}$ when treated with dil. $H_{2} S O_{4}$ or dil. $H C l$ . Reason: Less active metals like $C u$ do not give $H_{2}$ .

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
In reactivity series $C u$ is below hydrogen hence ' $C u$ ' doesn't give $H_{2}$ when treated with dil. $H_{2} S O_{4}$ or dil. $H C l$

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Q. Assertion
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Assertion (A) Phenols give o-and p-nitrophenol on nitration with conc. $H N O_{3} a n d H_{2} S O_{4}$ mixture.
Reason (R) - OH group in phenol is o-,p-directing.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
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(d) Assertion is wrong statement but reason is correct statement.
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Assertion :Cu doesn't give H2 when treated with dil. H2SO4 or dil. HCl. Reason: Less active metals like Cu do not give H2.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for AssertionIn reactivity series Cu is below hydrogen hence 'Cu' doesn't give H2 when treated with dil. H2SO4 or dil. HCl

Assertion : $C u$ doesn't give $H_{2}$ when treated with dil. $H_{2} S O_{4}$ or dil. $H C l$ . Reason: Less active metals like $C u$ do not give $H_{2}$ .

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
In reactivity series $C u$ is below hydrogen hence ' $C u$ ' doesn't give $H_{2}$ when treated with dil. $H_{2} S O_{4}$ or dil. $H C l$