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Vapour pressure of a solution of 5g of non-electrolyte in 100g of water at a particular temperature is 2985 N/m2. The vapour pressure of pure water is 3000 N/m2. The molecular weight of the solute is:


  1. 120

  2. 180

  3. 380

  4. 60


Solution

The correct option is B

180


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