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Q 1270167016.     `200 ml` of a gaseous mixture containing `CO, CO_2` and `N_2` on complete combustion in just sufficient amount of `O_2` showed contraction of `40 ml`. When the resulting gases were passed through `KOH` solution it reduces by `50 %`. Calculate the volume ratio of `V_(CO_2): V_(CO):V_(N_2)` in original mixture.
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