Assertion :Ethylene glycol is a dihydric alcohol. Reason: The general formula for a dihydric alcohol is $C_{n} H_{2 n} (O H)_{2}$ .

Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.

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Both Assertion and Reason are correct. but Reason is not the correct explanation of Assertion.

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Assertion is correct but Reason is incorrect.

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Assertion is incorrect but Reason is correct.

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
Ethylene glycol $(H O - C H_{2} - C H_{2} - O H)$ is a dihydric alcohol. One molecule of ethylene glycol has two hydroxyl groups.

The general formula for dihydric alcohol is $C_{n} H_{2 n} (O H)_{2}$ .

Ethylene glycol has formula $C_{n} H_{2 n} (O H)_{2} = C_{2} H_{2 (2)} (O H)_{2} = C_{2} H_{4} (O H)_{2}$ .

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(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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Reason (R) They can form intermolecular hydrogen-bonding.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
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(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

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Choose the correct option.

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Assertion :Ethylene glycol is a dihydric alcohol. Reason: The general formula for a dihydric alcohol is CnH2n(OH)2.

Assertion :Ethylene glycol is a dihydric alcohol. Reason: The general formula for a dihydric alcohol is $C_{n} H_{2 n} (O H)_{2}$ .