Regarding ideal and non ideal solutions, incorrect combination is

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C2H5I + C2H5Br − Ideal solution

CHCl3+CH3COCH3 − Negative deviations from Raoult's law

C2H5OH+H2O − Positive deviations from Raoult's law

HNO3+H2O − Positive deviations from Raoult's law

answer is D.

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Detailed Solution

HNO3−H2O interactions (ion-dipole) are stronger than HNO3−HNO3 & H2O −H2O

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