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Maximum boiling azeotropes are formed by mixtures with:
ANegative deviations from Raoult's law
BNo deviation
CRandom behaviour
DPositive deviations from Raoult's law
Answer & Solution
Correct answer: A. Negative deviations from Raoult's law
Negative deviation = stronger intermolecular attractions in mixture than in pure components = LOWER vapour pressure than ideal = HIGHER boiling point. So negative deviation gives maximum boiling azeotropes (HCl/water, HNO3/water).
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