Which one of the following statements about water is FALSE?

The main oxides formed on combustion of Li, Na and K in excess of air are, respectively :

The distillation technique most suited for separating glycerol from spent-lye in the soap industry is :

At 300 K and 1 atm, 15 mL of a gaseous hydrocarbon requires 375 mL air containing 20% O₂ by volume for complete combustion. After combustion the gases occupy 345 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: