Which of the following is used for artificial ripening of fruits?

Options

A. `C_2H_4`
B. `C_2H_6`
C. `CH_4`
D. None of these

Explanation

To solve the question "Which of the following is used for artificial ripening of fruits?", we will analyze the options provided and identify the correct answer based on our knowledge of chemistry and the role of certain compounds in the ripening process.

### Step-by-Step Solution:

1. **Identify the Options**: The options given are:
- C2H4
- C2S6
- CH4
- None of these

2. **Understand the Role of Ethylene**: Ethylene (C2H4) is a naturally occurring plant hormone that plays a crucial role in the ripening of fruits. It is known to promote the ripening process by triggering various biochemical processes in the fruit.

3. **Evaluate Each Option**:
- **C2H4 (Ethylene)**: As mentioned, this is the gas used for artificial ripening of fruits. It is effective in concentrations around 100 parts per million.
- **C2S6 (Disulfide)**: This compound is not known to be involved in the ripening of fruits.
- **CH4 (Methane)**: This is a simple hydrocarbon that does not play a role in fruit ripening.
- **None of these**: This option would only be correct if none of the other options were applicable.

4. **Conclusion**: Since ethylene (C2H4) is widely recognized and used for the artificial ripening of fruits, the correct answer is **C2H4**.

### Final Answer:
The compound used for artificial ripening of fruits is **C2H4 (Ethylene)**.

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