Consider the following statements :
I. Washing soda is an acidic salt whereas baking soda is a basic salt.
II. Tamarind juice docs not change the colour of red litmus solution.
III. Slaked lime neutralises the acidic nature of the soil.
IV. Milk of magnesia is acidic in nature.
The correct statements are

Options

A. I, II and IV only
B. II, III and IV only
C. I, III and IV only
D. II and III only.

Explanation

To solve the question, we need to evaluate each of the given statements about the substances mentioned and determine their correctness.

### Step-by-Step Solution:

1. **Evaluate Statement I:**
- **Statement:** Washing soda is an acidic salt whereas baking soda is a basic salt.
- **Analysis:**
- Washing soda (sodium carbonate, Na2CO3) is actually a basic salt.
- Baking soda (sodium bicarbonate, NaHCO3) is also a basic salt.
- **Conclusion:** This statement is **incorrect**.

2. **Evaluate Statement II:**
- **Statement:** Tamarind juice does not change the colour of red litmus solution.
- **Analysis:**
- Tamarind juice contains tartaric acid, which is an acid.
- Acids turn blue litmus paper red, but they do not change red litmus paper.
- **Conclusion:** This statement is **correct**.

3. **Evaluate Statement III:**
- **Statement:** Slaked lime neutralises the acidic nature of the soil.
- **Analysis:**
- Slaked lime (calcium hydroxide, Ca(OH)2) is a base and is used to neutralize acidic soils.
- **Conclusion:** This statement is **correct**.

4. **Evaluate Statement IV:**
- **Statement:** Milk of magnesia is acidic in nature.
- **Analysis:**
- Milk of magnesia (magnesium hydroxide, Mg(OH)2) is a basic substance.
- **Conclusion:** This statement is **incorrect**.

### Final Conclusion:
The correct statements are **II and III**. Therefore, the answer is option **4: Second and Third only**.