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Question

Explosions and the resulting fires often kill or trap workers, block avenues of escape, and rapidly generate asphyxiating gases, threatening every worker underground. Explosions in underground mines and surface processing facilities are caused by accumulations of flammable gas and/or combustible dust mixed with air in the presence of an ignition source. Most of the explosions in mines occur due to the mixing of

A
Hydrogen with oxygen
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B
Oxygen with acetylene
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C
Methane with air
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D
Carbon dioxide with ethane
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