A gaseous mixture used in spark chamber of Miller`s experiment contained all of the following gases,except

Options

A. Methane
B. Ammonia
C. Hydrogen
D. Oxygen

Answer

To solve the question regarding the gaseous mixture used in Miller's experiment, we will follow these steps:

### Step 1: Understand the context of Miller's experiment
Miller's experiment, conducted in the 1950s, aimed to simulate the conditions of early Earth and test the chemical origins of life. He used a mixture of gases believed to be present in the early atmosphere.

### Step 2: Identify the gases used in the experiment
The primary gases used in Miller's experiment were:
- Methane (CH₄)
- Ammonia (NH₃)
- Hydrogen (H₂)
- Water vapor (H₂O)

### Step 3: Analyze the options provided in the question
The question asks which gas was NOT included in the gaseous mixture. The options typically include:
1. Methane
2. Ammonia
3. Hydrogen
4. Oxygen

### Step 4: Determine which gas is not part of the mixture
From the information gathered, we can see that:
- Methane, Ammonia, and Hydrogen were indeed used in the experiment.
- Oxygen, however, was not part of the gaseous mixture used in Miller's experiment.

### Step 5: Conclude the answer
Therefore, the gas that was NOT included in the gaseous mixture of Miller's experiment is **Oxygen**.

### Final Answer:
The gaseous mixture used in Miller's experiment contained all of the following gases, except **Oxygen**.

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