Penicillin was used in

Options

A. World war II
B. World war I
C. Both A and B
D. III war of Panipat

Answer

**Step-by-Step Solution:**

1. **Identify the Substance**: The question asks about "penicillin," which is a well-known antibiotic.

2. **Understand the Origin**: Penicillin is derived from the fungus Penicillium. It is a secondary metabolite produced by this fungus under certain conditions, particularly when its growth is stressed.

3. **Historical Context**: Penicillin was discovered and developed for medical use during the early 20th century. Its significant use in medicine began during a major global conflict.

4. **Determine the Timeframe**: The major global conflicts referred to in the options are World War I and World War II. Penicillin was first widely used during World War II, as it became available for treating bacterial infections in soldiers.

5. **Evaluate the Options**: The options provided are:
- World War I
- World War II
- Both World War I and World War II
- Third War of Panipat

6. **Select the Correct Answer**: Based on historical evidence, penicillin was predominantly used during World War II. Therefore, the correct answer is World War II.

**Final Answer**: Penicillin was used in World War II.

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