Select the correct match of air pollution source with the type of pollutant and the effect it produces.

Options

A. Chemical factory `to NO_(2) to ` Ozone hole
B. Automobile exhaust `to N_(2)O to` Asphyxia effect
C. Heavy industry `to CO_(2) to ` Acid rain
D. Incinerators `to NO_(x) " gases " to` Photochemical smog

Explanation

To solve the question of matching air pollution sources with the type of pollutant and the effects they produce, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Identify the First Option:**
- **Source:** Chemical Factory
- **Pollutant:** NO2 (Nitrogen Dioxide)
- **Effect:** Ozone Hole
- **Analysis:** Chemical factories primarily release pollutants like mercury and arsenic, not NO2. Additionally, the ozone hole is primarily caused by CFCs (chlorofluorocarbons), not NO2.
- **Conclusion:** This option is incorrect.

2. **Identify the Second Option:**
- **Source:** Automobile Exhaust
- **Pollutant:** N2O (Nitrous Oxide)
- **Effect:** Asphyxia
- **Analysis:** Automobile exhaust mainly contains nitrogen oxides (NOx), which can lead to respiratory problems, but it does not primarily release N2O. Asphyxia is not a direct effect of nitrogen oxides.
- **Conclusion:** This option is incorrect.

3. **Identify the Third Option:**
- **Source:** Heavy Industry
- **Pollutant:** CO2 (Carbon Dioxide)
- **Effect:** Acid Rain
- **Analysis:** While heavy industries do produce CO2, acid rain is primarily caused by sulfur dioxide (SO2) and nitrogen oxides (NOx), not CO2.
- **Conclusion:** This option is incorrect.

4. **Identify the Fourth Option:**
- **Source:** Incinerators
- **Pollutant:** Nitrogen Oxide (NOx)
- **Effect:** Photochemical Smog
- **Analysis:** Incinerators do release nitrogen oxides, which can react with hydrocarbons in the presence of sunlight to form photochemical smog. This is a well-documented effect of nitrogen oxides.
- **Conclusion:** This option is correct.

### Final Answer:
The correct match is:
- **Source:** Incinerators
- **Pollutant:** Nitrogen Oxide (NOx)
- **Effect:** Photochemical Smog