Q.

The ratio between lowering of vapour pressure of solution and mole fraction of solute is equal to

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a

Molar mass of solvent

b

vapour pressure of pure solvent

c

vapour pressure of solution

d

relative lowering of vapour pressure

answer is B.

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Detailed Solution

P0PsP0=x2(mole fraction of solute)

P0Psx2=P0 (V.P of pure solvent) 

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