CBSE Class 6 Science Methods of Separation in Everyday Life (Class 6 NCERT New) Quiz 4

1. Separation of common salt from the sea water is by ………………

A sieving B evaporation C magnetic separation D winnowing

2. The method used to separate substances differing in colour, size and shape from a solid mixture ………………….

A magnetic separation B decantation C handpicking D sieving

3. In a mixture, solids of different size can be separated by ……………..

A magnetic separation B winnowing C sieving D evaporation

4. The method used to separate the seeds from the fruit juice is …………………

A filtration B sieving C crystallization D winnowing

5. Husk is separated from heavier seeds of grain

A a. winnowing B b. Hand picking C c. sieving D d. None of the above

6. Which of the following properties can affect dissolution of sugar in water?

A a. Quantity of Sugar B b. Temperature C c. Type of water D d. Amount of sugar dissolved

7. Which technique is used to purify dirty water?

A a. Centrifugation B b. Evaporation C c. Sedimentation D d. Decantation

8. Four mixtures are given below (i) Kidney beans and chick peas (ii) Pulses and rice (iii) Rice flakes and corn (iv) Potato wafers and biscuits Which of these can be separated by the method of winnowing?

A (a) (i) and (ii) B (b) (ii) and (iii) C (c) (i) and (iii) D (d) (iii) and (iv)

9. A solution is said to be _______ if it cannot dissolve more of the substance in it.

A a. Saturated B b. Unsaturated C c. Homogeneous D d. Hetrogenous

10. A mixture of salt, sand, oil and water is given ,which of these sequence can be used to separate salt

A a. Decantation -> Filtration -> Evaporation B b. Filtration -> Evaporation -> Condensation C c. Filtration -> boiling ->Decantation D d. None of the above