Statement - I : When methanol is added to water boiling point of water decreases.
Statement - II : Methanol when added to water gives a non ideal solution with negative deviation.

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Both statements I and II are correct

Statement-I is incorrect and statement-II is correct

Both statements I and II are incorrect

Statement-I is correct and statement-II is incorrect

answer is B.

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Detailed Solution

Methyl alcohol and water both are volatile liquids which when mixed forms a binary solution.

The vapour pressure of this solution becomes more as compared to individual pure components because when methyl alcohol is added to water, methyl alcohol-water interaction is less than that of methyl alcohol-methyl alcohol or water-water interaction that is why it will show positive deviation from Raoult's law.

Since a positive deviation from Raoult's law indicates a rise in vapour pressure the boiling point of the solution decreases

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