Separation of substances

1. Butter is separated from milk by

• Sedimentation

• filtration

• churning

• decantation

2. Filtration is a method to separate the components of a

• solution

• mixture of a liquid and an insoluble substance

• both (a) and (b)

• pure substance

3. Which method is used to separate pebbles and stones from sand?

• Handpicking

• Winnowing

• Sieving

• Threshing

4. The components of a solution (say sugar in water) can be separated by

• filtration

• evaporation

• sedimentation

• decantation

5. Sand from water is separated by

• sieving

• evaporation

• filtration

• sedimentation and decantation

6. The process of conversion of water vapours into liquid is called

• condensation

• decantation

• sedimentation

• evaporation

7. The process of conversion of water into its vapours is called

• guttation

• condensation

• transpiration

• evaporation

8. The property which forms the basis of sieving difference in weight

• difference in shape

• difference in weight

• difference in size

• difference in colour