Colligative properties depend on:

Options

A. The nature of solute particles in solution
B. The number of solute particles in solution
C. The nature of solute and solvent particles
D. The physical properties of solute particles in solution

Explanation

**Step-by-Step Solution:**

1. **Understanding Colligative Properties**:
- Colligative properties are properties of solutions that depend on the number of solute particles in a given amount of solvent, rather than the identity or nature of those solute particles.

2. **Identifying the Options**:
- The question provides several options regarding what colligative properties depend on:
- A) The nature of solute particles
- B) The number of solute particles in solution
- C) The nature of solute and solvent particles
- D) The physical property of solute particles in solution

3. **Analyzing Each Option**:
- **Option A**: The nature of solute particles - This is incorrect because colligative properties do not depend on the type of solute.
- **Option B**: The number of solute particles in solution - This is correct as colligative properties depend on the quantity of solute particles.
- **Option C**: The nature of solute and solvent particles - This is incorrect for the same reason as option A.
- **Option D**: The physical property of solute particles in solution - This is also incorrect since colligative properties do not depend on the physical properties of solute particles.

4. **Conclusion**:
- The correct answer is **B) The number of solute particles in solution**. This is the fundamental characteristic of colligative properties.