Methods of Separation in Everyday Life — Important Questions

Evaporation

Salt is dissolved in water, so methods like handpicking, magnetic separation, or ordinary filtration cannot separate it from the water. The chapter says seawater is kept in shallow pits and exposed to sunlight and air until the water evaporates, leaving the solid mixture behind. So evaporation is the correct method for obtaining salt from saltwater.

True

Winnowing uses wind or blowing air to separate lighter components (husk) from heavier components (grains). The wind blows away the lighter husk.

Filtration - Separating tea leaves from tea

Each method is suited for specific types of mixtures based on the properties of the components to be separated.

Size differences, Color differences, Shape differences

Handpicking works when components have visible differences in size, color, or shape that allow us to pick them by hand.