Question

Which separation technique is used in salt from sea-water

Answer 1

Separate Salt and Water Using Evaporation Evaporation works the same way as distillation, just at a slower rate. Pour the salt water into a shallow pan. As the water evaporates, the salt will remain behind. You can speed up the process by raising the temperature or by blowing dry air over the surface of the liquid. A variation of this method is to pour the salt water onto a piece of dark construction paper or a coffee filter. This makes recovering the salt crystals easier than scraping them out of the pan.