Candle wax and kerosene both produce same products on combustion. Why is kerosene a better fuel than candle wax?

Explanation

### Step-by-Step Solution:

1. **Understanding Combustion**: Both candle wax and kerosene undergo combustion, which is a chemical reaction with oxygen that produces heat and light. The primary products of combustion for both substances are carbon dioxide (CO2) and water (H2O).

2. **Complete vs. Incomplete Combustion**: Kerosene typically undergoes complete combustion, meaning it burns efficiently with enough oxygen, producing only carbon dioxide and water. In contrast, candle wax often experiences incomplete combustion due to insufficient oxygen, leading to the production of carbon monoxide (CO), soot, and other residues.

3. **Residue Production**: Because candle wax burns incompletely, it leaves behind residues such as unburned wax and smoke. This residue can be messy and undesirable, especially in enclosed spaces.

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