Oxidation number of C in CH_3OH, CH_2O,HCOOH and C_2H_2 is respectivel

1.	Oxidation number of C in CH_3OH, CH_2O,HCOOH and C_2H_2 is respectively :
Answer» `-2,0,+2,-1` `+2,0,+2,-2` `-2,0,+2,0` `-2,-4,+2,-2` ANSWER :A

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