Which one of the following diseases is not due to contamination of water ?

Options

A. (a) Hepatitis-B
B. (b) Jaundice
C. (c) Cholera
D. (d) Typhoid

Answer

To solve the question "Which one of the following diseases is not due to contamination of water?", we will analyze each option provided and determine their modes of transmission.

### Step-by-Step Solution:

1. **Identify the Diseases**: We need to look at the diseases listed in the options. For this solution, let's assume the options are:
- A) Hepatitis B
- B) Jaundice
- C) Cholera
- D) Typhoid

2. **Analyze Each Disease**:
- **Hepatitis B**: This is a viral infection caused by the hepatitis B virus. It is primarily transmitted through sexual contact, sharing of needles, or exposure to infected body fluids. It is **not** transmitted through contaminated water.

- **Jaundice**: Jaundice itself is a symptom rather than a disease and can be caused by various factors, including viral infections (like hepatitis), bacterial infections, or exposure to toxins. However, certain types of jaundice can be associated with waterborne diseases, particularly when caused by viral hepatitis.

- **Cholera**: This is a bacterial disease caused by the bacterium Vibrio cholerae. It is well-known to be transmitted through contaminated water and is a classic example of a waterborne disease.

- **Typhoid**: This is another bacterial disease caused by Salmonella typhi. It is also transmitted through contaminated food and water, making it a waterborne disease.

3. **Conclusion**: After analyzing the modes of transmission for each disease, we find that:
- Hepatitis B is not transmitted through contaminated water, while jaundice (in certain cases), cholera, and typhoid are all associated with water contamination.

Thus, the correct answer is **A) Hepatitis B**.