Fill in the blanks choosing appropriate word/words from these given in the brackets :
(increases, decreases, the highest, the lowest, elevation, directly depression, molality, mole fraction, `gt 1, lt 1, DeltaV, DeltaS`, number of solute particles, nature of solute particles, hypotonic, T, `- 3.72^(@)C, -1.86^(@)C`, zero, one, two, more than, less than, 1 kg, 1 mole, molal, same extent, solution, equivalent.)
When a solute is dissolved in a solvent, the vapour pressure of the solution.....

Explanation

To solve the question, we need to fill in the blank in the statement: "When a solute is dissolved in a solvent, the vapour pressure of the solution ______."

### Step-by-Step Solution:

1. **Understanding the Concept**: When a solute is added to a solvent, it affects the physical properties of the solution. One of the properties that is affected is the vapor pressure.

2. **Vapor Pressure and Solute Addition**: According to Raoult's Law, the vapor pressure of a solution is lower than that of the pure solvent. This is because the presence of solute particles disrupts the ability of solvent molecules to escape into the vapor phase.

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