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Intermolecular association decrease from primary to tertiary amine because no. of hydrogen bond decreases. So order of boiling point in isomeric amines.Primary  > Secondary > TertiaryStatement-II : Boiling point of alcohols are greater than amines when they have comparable molecular mass due to greater H-bond strength in alcohol.A Statement-I and II both  are correct B Statement-I is incorrect but statement-II is correct. C Statement-I is correct but statement-II is false. D Both statement-I and II are incorrect.

Question

Intermolecular association decrease from primary to tertiary amine because no. of hydrogen bond decreases. So order of boiling point in isomeric amines.Primary  > Secondary > TertiaryStatement-II : Boiling point of alcohols are greater than amines when they have comparable molecular mass due to greater H-bond strength in alcohol.A Statement-I and II both  are correct B Statement-I is incorrect but statement-II is correct. C Statement-I is correct but statement-II is false. D Both statement-I and II are incorrect.

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Solution

The statement says that the intermolecular association decreases from primary to tertiary amine because the number of hydrogen bonds decreases. Therefore, the order of boiling point in isomeric amines is primary > secondary > tertiary.

The statement also says that the boiling point of alcohols is greater than amines when they have comparable molecular mass due to greater hydrogen bond strength in alcohols.

Based on this information, we can conclude that both Statement-I and Statement-II are correct. Therefore, the correct answer is option A: Statement-I and II both are correct.

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