With respect to Miller's experiment, which of the following condition is not applicable?

Options

A. Temperature = `800^@C`
B. Gases in flask = `CH_4, NH_3, H_2 and H_2O`
C. Orgaic compounds obtained = Nitrogen compound like nucleotides
D. Electrodes = To produce spark

Answer

To solve the question regarding Miller's experiment, we will analyze each option provided and determine which condition is not applicable.

### Step-by-Step Solution:

1. **Understanding Miller's Experiment**:
- Miller's experiment, conducted by Stanley Miller in 1953, aimed to simulate the conditions of early Earth to test the chemical origins of life. It involved creating an environment that mimicked the primordial atmosphere and applying energy to induce chemical reactions.

2. **Analyzing the Options**:
- **Option 1: Temperature is equal to 800 degrees Celsius**:
- This option is applicable. The experiment was conducted under high-temperature conditions, but not necessarily at 800 degrees Celsius. However, high temperatures were indeed part of the experimental setup.

- **Option 2: Gases in the flask**:
- This option is applicable. The gases used in Miller's experiment included methane (CH4), ammonia (NH3), hydrogen (H2), and water vapor (H2O), which were believed to represent the early Earth's atmosphere.

- **Option 3: Ammonia, Hydrogen, Water, and Methane gases are available in the flask**:
- This option is also applicable. These gases were indeed present in the experimental setup.

- **Option 4: Organic compounds obtained, nitrogen carbon like nucleotides**:
- This option is not applicable. While Miller's experiment did produce organic compounds, it did not specifically yield nucleotides. The primary products were amino acids and other simple organic molecules, not complex nitrogenous compounds like nucleotides.

3. **Conclusion**:
- The condition that is not applicable in Miller's experiment is **Option 4**: "Organic compounds obtained, nitrogen carbon like nucleotides."

### Final Answer:
The correct answer is **Option 4**.

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