Water gas is produced by

Explanation

**Step-by-Step Solution:**

1. **Understanding Water Gas**: Water gas is a mixture of hydrogen (H₂) and carbon monoxide (CO). It is also known as synthesis gas or syngas.

2. **Production Process**: Water gas is produced through a reaction between carbon (in the form of coke) and steam (water vapor).

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