Question

The gas that usually causes explosion in coal mines is

• A. methane
• B. carbon monoxide
• C. carbon dioxide
• D. hydrogen

Answer 1

The correct option is A methane

There are two main types of coal mine explosions: methane and coal dust. Methane explosions occur when a buildup of methane gas contacts a heat source and there is not enough air to dilute the gas level below its explosion point.

So, the correct option is 'methane'.