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Relative loweringof vapour pressure of a dilute solution is `0.2`. What is the mole fraction of non-volatile solute ?A. `0.8`B. `0.5`C. `0.3`D. `0.2`

Answer» Correct Answer - D
Relative lowering of vapour pressure is equal to mole fraction of soluble.
`therefore` Mole fraction of solute `=0.2`.


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