Q1: Flash distillation is suitable for the separation of components

ANS:C - having very wide boiling points.

Flash distillation is suitable for the separation of components: having very close boiling points. Flash distillation is a process used for the separation of components in a liquid mixture based on their boiling points. It involves heating the liquid mixture to a temperature where a portion of it vaporizes, and then rapidly reducing the pressure, causing the remaining liquid to vaporize as well. The vapor and liquid phases are then separated, typically in a flash drum or vessel, where the lighter components with lower boiling points are collected as overhead vapor, and the heavier components with higher boiling points are withdrawn as bottoms liquid. Flash distillation is particularly effective when dealing with components that have very close boiling points because the rapid vaporization and separation achieved in the flash drum allow for the efficient separation of these closely boiling components. It exploits the differences in vapor pressures of the components at a given temperature to achieve separation. Therefore, flash distillation is best suited for the separation of components having very close boiling points.