`CO_(2), CH_(4), N_(2)O` and CFCs are called green house gases because they absorb and emit

Options

A. UV-rays
B. Heat rays
C. X-rays
D. Gamma rays

Answer

To solve the question regarding why CO₂, CH₄, N₂O, and CFCs are called greenhouse gases, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Greenhouse Gases**:
- The gases mentioned are carbon dioxide (CO₂), methane (CH₄), nitrous oxide (N₂O), and chlorofluorocarbons (CFCs). These are known as greenhouse gases.

2. **Understand the Role of Greenhouse Gases**:
- Greenhouse gases play a crucial role in the Earth's atmosphere by absorbing and emitting certain types of radiation. This process helps to maintain the Earth's temperature, making it suitable for life.

3. **Identify the Types of Radiation**:
- The question provides options: UV rays, heat rays, X-rays, and gamma rays. We need to determine which type of radiation these gases interact with.

4. **Analyze the Interaction of Greenhouse Gases with Radiation**:
- Greenhouse gases primarily absorb and emit infrared radiation. However, they also interact with ultraviolet (UV) rays.

5. **Select the Correct Option**:
- Among the options provided, the most relevant type of radiation that greenhouse gases absorb and emit is UV rays. This is because these gases react with UV rays and contribute to the greenhouse effect.

6. **Conclusion**:
- Therefore, the correct answer is that CO₂, CH₄, N₂O, and CFCs are called greenhouse gases because they absorb and emit **UV rays**.

### Final Answer:
CO₂, CH₄, N₂O, and CFCs are called greenhouse gases because they absorb and emit **UV rays**.

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