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JEE Main20258 Apr 2025Evening ShiftChemistrySolutionsActual

Which of the following binary mixture does not show the behaviour of minimum boiling azeotropes?

Options

  1. AH ₂ O + CH ₃ COC ₂ H ₅
  2. BC ₆ H ₅ OH + C ₆ H ₅ NH ₂
  3. CCS ₂+ CH ₃ COCH ₃
  4. DCH ₃ OH + CHCl ₃

Correct answer

B. C ₆ H ₅ OH + C ₆ H ₅ NH ₂

Step-by-step solution

Binary mixture of C ₆ H ₅ OH and C ₆ H ₅ NH ₂ shows negative deviation from Raoult's law So vapour pressure of solution is less than V.P of pure C ₆ H ₅ OH & C ₆ H ₅ NH ₂ So B.P. of solution is greater than boiling point of pure C ₆ H ₅ OH & C ₆ H ₅ NH ₂ So shows maximum Boiling azeotrope

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