STATEMENT - 1 : Equivalent weight of a substance can never be greater than its molecular weight.
STATEMENT - 2 : Equivalent weight of boric acid is `(M)/(1)` where M is the molecular weight.
STATEMENT - 3 : Equivalent weight of `H_(3)PO_(2)` is `(M)/(3)`.

Options

A. TTF
B. TFT
C. FTT
D. TFF

Answer

To analyze the statements given in the question, we will evaluate each statement step by step.

### Step 1: Evaluate Statement 1
**Statement 1:** Equivalent weight of a substance can never be greater than its molecular weight.

**Explanation:**
- The equivalent weight (EW) is defined as the molecular weight (MW) divided by the n-factor (EW = MW/n).
- The n-factor is always a positive integer (greater than or equal to 1) for acids and bases, as it represents the number of moles of reactive species (like H⁺ or OH⁻) that can be replaced or produced.
- Therefore, since n is at least 1, the equivalent weight can be equal to or less than the molecular weight, but it cannot exceed it.

**Conclusion:** Statement 1 is **True**.

### Step 2: Evaluate Statement 2
**Statement 2:** Equivalent weight of boric acid is \( \frac{M}{1} \) where M is the molecular weight.

**Explanation:**
- Boric acid (H₃BO₃) can donate one hydrogen ion (H⁺) in reactions, which means its n-factor is 1.
- Using the formula for equivalent weight:
\[ \text{Equivalent Weight} = \frac{\text{Molecular Weight}}{\text{n-factor}} = \frac{M}{1} = M \]
- Thus, the equivalent weight of boric acid is indeed \( \frac{M}{1} \).

**Conclusion:** Statement 2 is **True**.

### Step 3: Evaluate Statement 3
**Statement 3:** Equivalent weight of \( H_3PO_2 \) is \( \frac{M}{3} \).

**Explanation:**
- To find the equivalent weight of \( H_3PO_2 \) (phosphorous acid), we need to determine its n-factor.
- In the case of \( H_3PO_2 \), it can donate two H⁺ ions, so the n-factor is 2.
- Therefore, the equivalent weight is calculated as:
\[ \text{Equivalent Weight} = \frac{\text{Molecular Weight}}{\text{n-factor}} = \frac{M}{2} \]
- The statement claims that the equivalent weight is \( \frac{M}{3} \), which is incorrect.

**Conclusion:** Statement 3 is **False**.

### Final Conclusion
- **Statement 1:** True
- **Statement 2:** True
- **Statement 3:** False

Thus, the correct option based on the evaluation of the statements is that Statements 1 and 2 are true, while Statement 3 is false.