Which of the following is used to prepare a medicine, which is used in making an important explosive, RDX?

Options

A. Acetaldehyde
B. Acetone
C. Formaldehyde
D. None of these

Answer

To solve the question regarding which compound is used to prepare a medicine that is also used in making RDX (Research Department Explosive), we can follow these steps:

### Step 1: Identify the Compounds
We need to analyze the given options to identify which compounds are flammable and could potentially be used in the synthesis of RDX. The compounds mentioned are Acetaldehyde, Acetone, and Formaldehyde.

### Step 2: Analyze the Properties of Each Compound
- **Acetaldehyde**: This is an organic compound that is flammable.
- **Acetone**: This is also a flammable organic solvent.
- **Formaldehyde**: This is a colorless gas that is flammable and is commonly used in various chemical syntheses.

### Step 3: Determine the Relevant Chemical Reaction
We need to find out which of these compounds can react with ammonia to form a compound that is related to RDX.

- When **Formaldehyde** reacts with ammonia, it forms **Urotropin** (also known as hexamethylenetetramine).

### Step 4: Connect Urotropin to RDX
Urotropin is a precursor in the synthesis of RDX. RDX is a powerful explosive, and Urotropin is also used as a medicine to treat urinary tract infections (UTIs).

### Step 5: Conclusion
Based on the analysis, the correct answer is **Formaldehyde**, as it is the compound that, when treated with ammonia, forms Urotropin, which is used in the preparation of RDX.

### Final Answer
The correct option is **Formaldehyde**.

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