NCERT Class 6 Lesson 5 | Separating Of Substances | Expected Questions

Expected questions from chapter 5 of NCERT class 6 Science are given below.

1. What do we use the separate tea leaves from the liquid?

Strainer

2. How do we separate larger sized impurities from wheat, rice or pulses?

We use the method of handpicking.

3. How do we obtain butter from curd?

We obtain butter from curd by churning.

4. What process is used to separate grain from stalks?

Threshing

5. Which method is used to separate heavier and lighter components of a mixture?

Winnowing

6. How do we separate husk particles from grain?

We separate husk particles from grain by blowing air. This process is called winnowing. The wind will carry away the husk particles.

7. What is sedimentation?

Sedimentation is the process in which heavier components in a mixture settle at the bottom after water is added to it.

8. What is decantation?

Decantation is the process by which water along with fine impurities like dust particles are removed from a mixture.

9. What process is used to separate a mixture of two liquids that do not mix with each other?

When we allow the mixture of two liquids to stand for some time, they will form two layers. For instance, if water and oil is mixed, the oil will form a layer above water. The top layer can be removed through decantation.

10. What is filtration?

Filtration is the process of removing larger impurities from a liquid by pouring it through a strainer.

11. What is sieving?

Sieving is the process of removing larger sized impurities from a mixture by passing it through a sieve.

12. What is evaporation?

Evaporation is the process of conversion of water into vapour.

13. What is condensation?

Condensation is the process of conversion of water vapour into its liquid form.

14. What is a saturated solution?

A saturated solution is a solution that cannot dissolve any more solute.