Catalytic converters are fitted into automobiles to reduce emission of harmful gases. Catalytic convertes change unburnt hydrocarbons into

Options

A. carbon dioxide and water
B. carbon monooxide
C. methane
D. carbon dioxide and methane.

Explanation

**Step-by-Step Solution:**

1. **Understand the Function of Catalytic Converters:**
- Catalytic converters are devices installed in automobiles to reduce harmful emissions. Their primary function is to convert harmful gases produced during combustion into less harmful substances.

2. **Identify the Harmful Emissions:**
- The main harmful emissions from automobile engines include unburnt hydrocarbons, carbon monoxide, nitrogen oxides, and particulate matter.

3. **Determine the Conversion Process:**
- The catalytic converter facilitates chemical reactions that convert unburnt hydrocarbons into less harmful substances. The key reactions involve the oxidation of these hydrocarbons.

4. **Identify the Products of the Conversion:**
- The primary products of the conversion of unburnt hydrocarbons in a catalytic converter are carbon dioxide (CO2) and water (H2O). These are considered non-toxic and are the desired end products.

5. **Evaluate the Given Options:**
- The options provided are:
a) Carbon dioxide and water
b) Carbon monoxide
c) Methane
d) Carbon dioxide and methane
- Among these, option (a) "Carbon dioxide and water" is the only choice that aligns with the function of catalytic converters to reduce harmful emissions.

6. **Conclusion:**
- Therefore, the correct answer to the question is that catalytic converters change unburnt hydrocarbons into carbon dioxide and water.

**Final Answer:**
Catalytic converters change unburnt hydrocarbons into carbon dioxide and water.

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