A graph is plotted between temperature on x-axis and vapour pressure on y-axis. Two different curves are obtained for solvent and solution containing dissolved non volatile solute particles at 1 atm pressure. Which physical phenomenon is shown by the graph?

(B) Elevation of boiling point


The boiling point of Solution containing dissolved nonvolatile solute particles is greater than the solvent. The difference between the solution and solvent is shown in graph. Alternative explanation: Adding solute to the solvent increases the temperature of the solution.

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