Colligative properties of the solution depend upon: A ) nature of the solutionB ) nature of the solventC ) number of solute particlesD ) number of moles of solvent

The colligative properties of a solution depend on the number of solute particles present in the solution, rather than the nature of the solution or solvent. Therefore, option C) "number of solute particles" is the correct answer.

Colligative properties are properties of solutions that depend solely on the concentration of solute particles, regardless of their chemical identity. These properties include:

Vapor pressure lowering: The presence of solute particles decreases the vapor pressure of the solvent in a solution compared to the pure solvent.

Boiling point elevation: The addition of solute particles raises the boiling point of the solvent in a solution compared to the pure solvent.

Freezing point depression: The presence of solute particles lowers the freezing point of the solvent in a solution compared to the pure solvent.

Osmotic pressure: The presence of solute particles creates a pressure difference across a semipermeable membrane, causing solvent molecules to flow from a lower solute concentration to a higher solute concentration.

These colligative properties depend on the number of solute particles rather than their nature. The concentration of solute particles is determined by the number of moles or particles of solute present, but it is not dependent on the number of moles of solvent. So, option D) "number of moles of solvent" is not correct.