Which one of the following pairs is not correctlyy matched ?

Options

A. Vitamin `-B_(12)` - Pernicious anaemia
B. Vitamin `-B_(6)` - Loss of appetite
C. Vitamin -`B_(1)` - Beri - beri
D. Vitamin -`B_(2)`- Pellagra

Answer

To solve the question of which pair is not correctly matched, we will analyze each vitamin and its associated deficiency disease step by step.

### Step-by-Step Solution:

1. **Identify Vitamin B12 and its deficiency:**
- Vitamin B12 is also known as cobalamin.
- Its deficiency leads to pernicious anemia.
- **Conclusion:** This pair is correctly matched.

2. **Identify Vitamin B6 and its deficiency:**
- Vitamin B6 is known as pyridoxine.
- A deficiency in vitamin B6 can cause loss of appetite.
- **Conclusion:** This pair is correctly matched.

3. **Identify Vitamin B1 and its deficiency:**
- Vitamin B1 is called thiamine.
- Its deficiency causes beriberi, which is characterized by weakness and swelling in the legs.
- **Conclusion:** This pair is correctly matched.

4. **Identify Vitamin B2 and its deficiency:**
- Vitamin B2 is known as riboflavin.
- The deficiency of vitamin B2 causes dermatitis.
- However, the question states that it causes pellagra, which is incorrect.
- Pellagra is actually caused by a deficiency of Vitamin B3, also known as niacin.
- **Conclusion:** This pair is not correctly matched.

### Final Answer:
The incorrectly matched pair is **Vitamin B2 causes pellagra.**

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