Assertion :Dehydration of alcohols always takes place in basic medium. Reason: $O H^{-}$ is a better leaving group.

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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Assertion and Reason both are incorrect.

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Solution

The correct option is D Assertion and Reason both are incorrect.
Dehydration of alcohols can be carried out either with protonic acids such as $c o n c . H_{2} S O_{4}, H_{3} P O_{4}$ or catalysts such as anhydrous zinc chloride or alumina.

$H_{2} O^{+}$ is a good leaving group than $O H^{-}$

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Assertion :Dehydration of alcohols always takes place in basic medium. Reason: OH− is a better leaving group.

The correct option is D Assertion and Reason both are incorrect.Dehydration of alcohols can be carried out either with protonic acids such as conc.H2SO4,H3PO4 or catalysts such as anhydrous zinc chloride or alumina.H2O+ is a good leaving group than OH−

Assertion :Dehydration of alcohols always takes place in basic medium. Reason: $O H^{-}$ is a better leaving group.

The correct option is D Assertion and Reason both are incorrect.
Dehydration of alcohols can be carried out either with protonic acids such as $c o n c . H_{2} S O_{4}, H_{3} P O_{4}$ or catalysts such as anhydrous zinc chloride or alumina.

$H_{2} O^{+}$ is a good leaving group than $O H^{-}$