Ten millilitre of a gaseous hydrocarbon was burnt completely in 80 ml of `O_2` at STP. The volume of the remaining gas is 70 ml. The volume became 50 ml, on treatment with `NaOH`. The formula of the hydrocarbon is:

10 ml gaseous hydrocarbon was burnt completely in 80 ml of O_(2) at NTP. The remaining gas occupied 70 ml at NTP. This volume became 50 ml on treatment with KOH solution. The empirical formula of the hydrocarbon is :

8.4 ml of a gaseous hydrocarbon was burnt with 50 ml of O_2 in a eudiometer tube. The volume of the products formed after cooling to room temperature was 37.4 ml, when reacted with NaOH, the volume contracted to 3.8 ml. The molecular formula of the hydrocarbon is

500 ml of a hydrocarbon gas burnt in excess of oxygen yields 2500 ml of CO_2 and 3 litres of water vapours. All volume being measured at the same temperature and pressure. The formula of the hydrocarbon is :

500mL of a hydrocarbon gas burnt in excess of oxygen yielded 2500 mL of Co_2 and 3.0 liter of water vapour (all volumes measured at the same temperature and pressure). The formula of the hydrocarbon is :