Catalytic converter brings about

Options

A. Complete oxidation of hydrocarbons
B. Oxidation of carbon monoxide to carbon dioxide
C. Reduction of nitrogen oxide to nitrogen
D. All the above

Answer

**Step-by-Step Solution:**

1. **Understanding the Function of a Catalytic Converter:**
- A catalytic converter is an essential component of an automobile's exhaust system that helps reduce harmful emissions. It facilitates chemical reactions to convert toxic gases into less harmful substances.

2. **Complete Oxidation of Hydrocarbons:**
- The first function of a catalytic converter is to achieve the complete oxidation of hydrocarbons. Hydrocarbons, which are compounds made of hydrogen and carbon, are present in vehicle emissions. The catalytic converter helps to oxidize these hydrocarbons into carbon dioxide (CO2) and water (H2O), thereby reducing pollution.

3. **Oxidation of Carbon Monoxide:**
- The second function is the oxidation of carbon monoxide (CO) to carbon dioxide (CO2). Carbon monoxide is a toxic gas produced during fuel combustion. The catalytic converter facilitates its oxidation, converting it into less harmful carbon dioxide.

4. **Reduction of Nitrogen Oxides:**
- The third function involves the reduction of nitrogen oxides (NOx) to nitrogen (N2). Nitrogen oxides are harmful pollutants that can contribute to smog and acid rain. The catalytic converter reduces these oxides back to nitrogen, which is a harmless gas.

5. **Conclusion:**
- Since all the options mentioned (complete oxidation of hydrocarbons, oxidation of carbon monoxide to carbon dioxide, and reduction of nitrogen oxides to nitrogen) are functions of a catalytic converter, the correct answer is that the catalytic converter brings about all of the above.

**Final Answer:**
- The catalytic converter brings about all of the above options (A, B, and C). Thus, the correct answer is option D: All of the above.

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