Give reasons for the following:
why do substance undergoes incomplete combustion gives out yellow flame?

Explanation

**Step-by-Step Solution:**

1. **Understanding Combustion**: Combustion is a chemical reaction that occurs when a substance reacts with oxygen, releasing energy in the form of heat and light. There are two types of combustion: complete and incomplete.

2. **Incomplete Combustion**: Incomplete combustion occurs when there is a limited supply of oxygen available for the reaction. This means that the fuel does not burn completely.

3. **Limited Oxygen Supply**: When the oxygen supply is insufficient, the fuel (such as hydrocarbons) does not fully convert into carbon dioxide and water. Instead, it produces carbon monoxide and unburned carbon particles (soot).

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