Miller created similar conditions in a laboratory scale for explaining the origin of life . The combination ratio of gases ` CH_4, H_2 and NH_3 `is

Options

A. `2: 1: 2`
B. ` 2: 2: 1`
C. ` 2: 2: 3`
D. ` 1: 2: 2`

Answer

To solve the question regarding the combination ratio of gases used by Miller in his experiment to explain the origin of life, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Purpose of Miller's Experiment**:
- Miller's experiment aimed to simulate the conditions of early Earth to explore the chemical origins of life.

2. **Identify the Gases Used in the Experiment**:
- The primary gases used in Miller's experiment were Methane (CH₄), Hydrogen (H₂), and Ammonia (NH₃).

3. **Determine the Ratio of the Gases**:
- In Miller's experiment, the combination ratio of the gases was specifically set to mimic the conditions believed to exist on primitive Earth.
- The ratio of Methane to Hydrogen to Ammonia is 2:2:1.

4. **Conclude the Findings**:
- This ratio indicates that for every 2 parts of Methane, there are 2 parts of Hydrogen and 1 part of Ammonia in the mixture used during the experiment.

5. **Final Answer**:
- Therefore, the combination ratio of the gases CH₄, H₂, and NH₃ in Miller's experiment is 2:2:1.