Urotropin is obtained from ammonia and _____, which is used in urinary diseases.

Options

A. acetone
B. acetaldehyde
C. formaldehyde
D. acetic acid

Explanation

To solve the question regarding what substance Urotropin is obtained from along with ammonia, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Urotropin**: Urotropin is a chemical compound that is known for its use as a urinary antiseptic. It is important to identify the components that make up Urotropin.

2. **Identify the Components**: The question states that Urotropin is obtained from ammonia. We need to find out what other substance is combined with ammonia to form Urotropin.

3. **Review the Options**: The options provided are:
- A) Acetone
- B) St aldehyde
- C) Formaldehyde
- D) Acetic acid

4. **Chemical Reaction Knowledge**: Urotropin is formed when ammonia reacts with formaldehyde. This is a well-documented chemical reaction in the field of chemistry and medicine.

5. **Select the Correct Answer**: Based on the knowledge that Urotropin is formed from ammonia and formaldehyde, the correct answer is:
- **C) Formaldehyde**

### Final Answer:
Urotropin is obtained from ammonia and **formaldehyde**, which is used in urinary diseases.

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