The gas that usually causes explosion in coal mines is
methane
carbon monoxide
carbon dioxide
hydrogen
A
methane
B
carbon dioxide
C
hydrogen
D
carbon monoxide
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Solution
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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'.
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