Question

Name the method that is used to separate
1. Salt from sea water
2. Tea leaves from tea
3. Grains from stalk of harvested plant
4. Stones from rice

Answer 1

1. Evaporation
2.filteration
3.threashing
4.hand picking

Answer 2

Answer:

1. The salt can be separated from the sea water by a simple process of evaporation.
2. Filtration is one of the method which is used for separating the liquid components from the solid components. Sieving is the used for separating large particles from solid components. For separating tea leaves from the tea as tea leaves are a solid component and tea is a liquid component, the filtration is used.
3. The process of beating harvested crops to separate the grains from the stalks (the dried stems) is called threshing. Threshing is of two types: manual threshing and threshing using machines.
4. The process to separate stones from rice is handpicking. Stones are large in size to be detected by eye easily and so, we find that handpicking is a convenient method of separating substances

Explanation:

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