STATEMENT-1 : Effect of adding a non-volatile solute to a solvent is to increases its freezing point.
STATEMENT-2 : Molality is a dimensionless quantity.
STATEMENT-3 : The hard shell of an egg was dissolved in HCl solution, and then egg was placed in concentrated solution of NaCl. Then egg will shrink.

Options

A. T F T
B. F F T
C. T T F
D. F T F

Answer

To solve the question, we need to evaluate each of the three statements provided and determine whether they are true or false.

### Step 1: Evaluate Statement 1
**Statement 1:** Effect of adding a non-volatile solute to a solvent is to increase its freezing point.

- When a non-volatile solute is added to a solvent, it causes a phenomenon known as "freezing point depression." This means that the freezing point of the solvent actually decreases, not increases. Therefore, this statement is **False**.

### Step 2: Evaluate Statement 2
**Statement 2:** Molality is a dimensionless quantity.

- Molality is defined as the number of moles of solute per kilogram of solvent. Its unit is moles per kilogram (mol/kg), which means it has dimensions. Therefore, this statement is also **False**.

### Step 3: Evaluate Statement 3
**Statement 3:** The hard shell of an egg was dissolved in HCl solution, and then the egg was placed in a concentrated solution of NaCl. Then the egg will shrink.

- The hard shell of an egg is primarily composed of calcium carbonate (CaCO3), which dissolves in hydrochloric acid (HCl), creating a semi-permeable membrane. When the egg is placed in a concentrated NaCl solution, osmosis occurs. Water moves from the egg (where the solute concentration is lower) to the NaCl solution (where the solute concentration is higher), causing the egg to shrink. Therefore, this statement is **True**.

### Conclusion
Based on the evaluations:
- Statement 1: False
- Statement 2: False
- Statement 3: True

Thus, the correct answer is **Option B: False-False-True**.

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