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NTA Abhyas JEE Main2020ChemistrySolutionsPractice

Assertion: Azeotropic mixtures are formed only by non-ideal solutions and they may have boiling points either greater than both the components or less than both the components. Reason: The composition of the vapour phase is same as that of the liquid phase of an azeotropic mixutre.

Options

  1. AIf both assertion and reason are true and the reason is the correct explanation of the assertion.
  2. BIf both assertion and reason are true but reason is not the correct explanation of the assertion.
  3. CIf assertion is true but reason is false.
  4. DIf assertion is false but reason is true.

Correct answer

B. If both assertion and reason are true but reason is not the correct explanation of the assertion.

Step-by-step solution

Non-ideal solutions with positive deviation i.e., having more vapour pressure than expected, boil at lower temperature while those with negative deviation boil at higher temperature than those of the components.

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