CUET · CHEMISTRY · PYQ PAPER 2025

Choose the correct statement from the options given below:

A The solution of benzene and toluene is an example of an ideal solution.
B For an ideal solution, \(\Delta H_{m i x}>0\).
C Ideal solutions do not obey Raoult's law.
D The solution of water and alcohol is an example of an ideal solution.

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Answer & Solution

Correct Answer

(A) The solution of benzene and toluene is an example of an ideal solution.

Step-by-step Solution

Detailed explanation

The solution of benzene and toluene is an example of an ideal solution.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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