Alkaline nature of bile is due to

Options

A. NaCl
B. NaHCO
C. KOH
D. NaOH

Answer

### Step-by-Step Solution:

1. **Understanding Bile Composition**: Bile is a digestive juice produced by the liver, stored in the gallbladder, and released into the duodenum. It plays a crucial role in the emulsification of fats during digestion.

2. **Components of Bile**: The main components of bile include:
- Water (97-98%)
- Bile salts (approximately 0.7%)
- Bile pigments (approximately 0.2%)
- Fats (approximately 0.51%)
- Inorganic salts

3. **Role of Bile Salts**: Bile salts, such as sodium glycolate and sodium taurocholate, are important for fat digestion and absorption.

4. **Alkaline Nature of Bile**: The bile is slightly basic (alkaline) in nature. This alkalinity is primarily due to the presence of certain inorganic salts.

5. **Identifying the Correct Salt**: Among the options provided:
- Sodium chloride: Incorrect, as it does not contribute to alkalinity.
- Sodium hydrogen carbonate: Correct, as it is responsible for the alkaline nature of bile.
- Potassium hydroxide: Incorrect, as it is not a component of bile.
- Sodium hydroxide: Incorrect, as it is not present in bile.

6. **Conclusion**: The alkaline nature of bile is due to the presence of sodium hydrogen carbonate.

### Final Answer:
The alkaline nature of bile is due to **sodium hydrogen carbonate**.

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