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The gas that usually causes explosions in coal mines is

1 Hydrogen

2 Carbon monoxide

3 Air

4 Methane

Question Posted / shailesh ginoya

Answer Posted / shailesh ginoya

4. methane

Is This Answer Correct ?    5 Yes 1 No



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meron po bang minerals ang astoroids po ba?

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hai sir pls send me Appsc Assistant Statistical Officer(ASO) previous papers. And Apsrtc MST previous papers. Thanks you sir.

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