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MHT CET Chemistry question

ChemistrySolutionsMHT CET

The vapour pressure of pure liquid is 1.2 atm. When a non-volatile substance B is mixed in A, then its vapour pressure becomes 0.6 atm. The mole fraction of B in the solution is

Answer: (C)

Solution

, so ; 0.15,

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Question ID VK-061338