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Identify the mixture that shows positive deviations from Raoult’s law.

1. (CH 3 ) 2 CO + C 6 H 5 NH 2
2. CHCl 3 + C 6 H 6
3. CHCl 3 + (CH 3 ) 2 CO
4. (CH 3 ) 2 CO + CS 2

Correct answer: (CH 3 ) 2 CO + CS 2

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