Name the natural source of each of the following acid (i) Citric acid. (ii)Oxalic acid. (iii)Lactic acid. (iv)Tartaric acid.

Answer

To solve the question regarding the natural sources of the specified acids, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Acid**: The first acid mentioned is **citric acid**.
- **Natural Source**: The primary natural sources of citric acid are **lemons** and **oranges**.

2. **Identify the Second Acid**: The next acid is **oxalic acid**.
- **Natural Source**: Major natural sources of oxalic acid include **tomatoes** and **guava**.

3. **Identify the Third Acid**: The third acid is **lactic acid**.
- **Natural Source**: The main natural source of lactic acid is **sour milk**, which is commonly found in **curd**.

4. **Identify the Fourth Acid**: The last acid mentioned is **tartaric acid**.
- **Natural Source**: A significant natural source of tartaric acid is **tamarind**.

### Final Answer:
- (i) **Citric acid**: Lemon, Orange
- (ii) **Oxalic acid**: Tomato, Guava
- (iii) **Lactic acid**: Sour milk (Curd)
- (iv) **Tartaric acid**: Tamarind