The gas that usually causes explosions in coal mines is
1 Hydrogen
2 Carbon monoxide
3 Air
4 Methane
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Answer / surendra
its Hydrogen that combusts and cause explosion
Is This Answer Correct ? | 1 Yes | 2 No |
Catalytic properties of a substance may be best defined as a phenomenon of 1 Absorption 2 Chemisorption 3 Adsorption 4 None of these
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