200 ml of a gaseous mixture containing CO, CO_2 and N_2 on complete combustion in just sufficient amount of O_2

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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.
A

4:1:5

B

2:3:5

C

1:4:5

D

1:3:5

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