Coal gas mainly consites of

Options

A. methane `CO,H_2`
B. `"Propane" CO_2 H_2`
C. `"methane" CO H_2O`
D. methane `CO_2,H_2`

Explanation

**Step-by-Step Solution:**

1. **Understanding Coal Gas**: Coal gas is a type of gas that is produced from the carbonization of coal. It is primarily used as a fuel gas and has various applications, including heating and lighting.

2. **Identifying Components**: The main components of coal gas include:
- Carbon monoxide (CO)
- Methane (CH₄)
- Hydrogen (H₂)
...