An organic halogen compound which is used as refrigerant in refrigerators and air conditioners is :

Options

A. `BHC`
B. `C Cl_4`
C. Freon
D. `CHCl_3`

Explanation

To solve the question regarding which organic halogen compound is used as a refrigerant in refrigerators and air conditioners, we will analyze the given options step by step.

### Step 1: Identify the Options
We need to identify the organic halogen compounds provided in the options. The options are:
1. Benzene Hexachloride (BHC)
2. Carbon Tetrachloride (CCl4)
3. Freon
4. Chloroform (CHCl3)

### Step 2: Analyze Each Compound
- **Benzene Hexachloride (BHC)**: This compound is commonly known as Gamazine and is primarily used as an agricultural insecticide. It is not used as a refrigerant.

- **Carbon Tetrachloride (CCl4)**: This compound is used in dry cleaning and for removing grease from metals. It is not used as a refrigerant.

- **Freon**: Freon is a halogenated organic compound, specifically CF2Cl2. It is known for its use in refrigeration and air conditioning systems due to its properties that allow it to undergo evaporation and produce cooling effects.

- **Chloroform (CHCl3)**: Chloroform is mainly used as an industrial solvent and is not utilized as a refrigerant.

### Step 3: Conclusion
After analyzing all the options, we find that the only compound used as a refrigerant in refrigerators and air conditioners is **Freon**.

### Final Answer
The organic halogen compound which is used as a refrigerant in refrigerators and air conditioners is **Freon**.

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