Name the gas released from refrigerators, air conditioner.

Options

A. CO (carbon monoxide)
B. `CO_2` (carbon dioxide)
C. CFC (chloro fluoro carbon)
D. None of these

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:** The question asks for the name of the gas released from refrigerators and air conditioners.

2. **Identifying Common Gases:** We need to consider the gases commonly associated with refrigeration and air conditioning systems. Some gases include carbon monoxide, carbon dioxide, and chlorofluorocarbons (CFCs).

3. **Analyzing Each Option:**
- **Carbon Monoxide (CO):** This gas is typically produced from incomplete combustion and is not commonly associated with refrigerators or air conditioners.
- **Carbon Dioxide (CO2):** While this gas is produced by various processes, it is not the primary gas released from refrigeration systems.
- **Chlorofluorocarbons (CFCs):** These are synthetic compounds used as refrigerants in air conditioning and refrigeration systems. They are known for their role in ozone layer depletion and global warming.
- **Other Options:** The question mentions "last option of these," which seems vague but does not apply here since CFCs are the most relevant choice.

4. **Conclusion:** The gas released from refrigerators and air conditioners is **Chlorofluorocarbon (CFC)**.

5. **Final Answer:** CFC (Chlorofluorocarbon).

---