Name the colourless poisonous gas which is produced from incomplete buming fossils-fuels.

Options

A. CO (carbon monoxide)
B. `CO_2` (carbon dioxide)
C. `O_2` (oxide)
D. None of these

Answer

**Step-by-Step Solution:**

1. **Understanding Combustion:**
- Combustion is a chemical reaction that occurs when a substance (usually a hydrocarbon) reacts with oxygen. This reaction can be complete or incomplete.
- In complete combustion, hydrocarbons react fully with oxygen to produce carbon dioxide (CO2) and water (H2O).

2. **Identifying Incomplete Combustion:**
- Incomplete combustion occurs when there is not enough oxygen available for the hydrocarbon to react completely.
- This results in the production of different products, one of which is a poisonous gas.

3. **Products of Incomplete Combustion:**
- During incomplete combustion, the primary products include carbon monoxide (CO) and water (H2O).
- Carbon monoxide is a colorless and poisonous gas that is harmful to human health.

4. **Conclusion:**
- The colorless poisonous gas produced from the incomplete burning of fossil fuels is carbon monoxide (CO).

**Final Answer:**
The colorless poisonous gas produced from incomplete burning of fossil fuels is **carbon monoxide (CO)**.

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