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  4. When a substance is dissolved in a solvent, the vapour pressure of solvent decreases. It brings:

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Q. When a substance is dissolved in a solvent, the vapour pressure of solvent decreases. It brings:

BHUBHU 2004

Solution:

Boiling point $\propto \frac{1}{\text { vapour pressure }}$
Hence, when we decrease the vapour pressure, boiling point increases.