WAEC - Chemistry (2022 - No. 45)
Which of the following processes occur during fractional distillation of petroleum?
Condensation and diffusion
Diffusion and evaporation
Diffusion and sublimation
Evaporation and condensation
คำอธิบาย
Fractional distillation is a series of processes of evaporation and condensation at a number of points in a vertical column.