In Miller's experiment, ……... Was not used

Options

A. Methane
B. Hydrogen
C. Water vapour
D. Nitrogen

Answer

**Step-by-Step Solution:**

1. **Understanding Miller's Experiment:**
- Miller's experiment, conducted in 1953, aimed to simulate the conditions of early Earth to investigate the origin of life. He created an environment similar to that which was believed to exist on the primitive Earth.

2. **Components Used in the Experiment:**
- The experiment utilized a mixture of gases that were thought to be present in the early Earth's atmosphere. These included:
- Methane (CH₄)
- Ammonia (NH₃)
- Hydrogen (H₂)
- Water vapor (H₂O)

3. **Identifying the Missing Component:**
- The question asks which component was not used in Miller's experiment.
- From the list of gases used, we can see that nitrogen (N₂) was not included in the mixture. Although ammonia contains nitrogen, molecular nitrogen (N₂) was not part of the gases used in the experiment.

4. **Conclusion:**
- Therefore, the answer to the question "In Miller's experiment, ______ was not used" is nitrogen (N₂).

**Final Answer: Nitrogen (N₂) was not used in Miller's experiment.**

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