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At 300 K , and 1 atm , 15 mL of a gaseou...

At 300 K , and 1 atm , 15 mL of a gaseous hydrocarbon requires 375 mL air containing 20% `O_(2)` by volume for complete combustion . After combustion the gases occupy 330 mL . Assuming that the water formed is in liquid form and the volumes were measured at the same temperature and pressure , the formula of the hydrocarbon is -

A

`C_(4) H_(10) `

B

`C_(3) H_(6)`

C

`C_(3) H_(8)`

D

`C_(4) H_(8)`

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