Water gas is ?

Explanation

**Step-by-Step Solution:**

1. **Definition of Water Gas**: Water gas is defined as a specific type of gas that consists of a mixture of carbon monoxide (CO) and hydrogen (H2).

2. **Formation of Water Gas**: Water gas is produced through a chemical reaction involving steam (H2O) and carbon (usually in the form of coke or coal). The reaction occurs at high temperatures, typically around 1000 degrees Celsius.

3. **Chemical Reaction**: The chemical reaction that produces water gas can be represented as:
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