Which of the following statement are CORRECT for the boiling point of solvent containing a dissolved solid substance ?

Options

A. Boiling point of the liquid is depressed
B. Boiling point of the liquid is elevated
C. There is no effect on the boiling point
D. The change depends upon the polarity of liquid

Answer

To determine which statements are correct regarding the boiling point of a solvent containing a dissolved solid substance, we will analyze the effects of adding a non-volatile solute to a solvent.

### Step-by-Step Solution:

1. **Understanding the Concept of Boiling Point Elevation**:
- When a non-volatile solute is dissolved in a solvent, the boiling point of the resulting solution is typically higher than that of the pure solvent. This phenomenon is known as boiling point elevation.

**Hint**: Remember that the presence of a solute affects the physical properties of the solvent.

2. **Analyzing the Statements**:
- **Statement A**: "Boiling point of the liquid is depressed."
- This statement is incorrect. The boiling point is elevated, not depressed, when a non-volatile solute is added.

**Hint**: Consider the definition of boiling point elevation and how solutes interact with solvents.

- **Statement B**: "Boiling point of the liquid is elevated."
- This statement is correct. The addition of a non-volatile solute increases the boiling point of the solution compared to the pure solvent.

**Hint**: Recall that adding solute generally increases the boiling point due to the disruption of the solvent's ability to vaporize.

- **Statement C**: "There is no effect on the boiling point."
- This statement is incorrect. The boiling point is indeed affected by the presence of the solute.

**Hint**: Think about how solutes influence the properties of solutions.

- **Statement D**: "The change depends upon the polarity of the liquid."
- This statement is also incorrect. The boiling point elevation is primarily dependent on the number of solute particles in the solution, not the polarity of the solvent.

**Hint**: Focus on colligative properties, which depend on the quantity of solute rather than its chemical nature.

3. **Conclusion**:
- The only correct statement regarding the boiling point of a solvent containing a dissolved solid substance is **Statement B**: "Boiling point of the liquid is elevated."

### Summary of Correct Statements:
- **Correct Statement**: B (Boiling point of the liquid is elevated)
- **Incorrect Statements**: A, C, D