SEPARATION OF SUBSTANCES CLASS-VI

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

• sieving
• evaporation
• magnetic separation
• winnowing

Tags

NGSS.MS-PS1-4

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

• magnetic separation
• decantation
• handpicking
• sieving

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

• magnetic separation
• winnowing
• sieving
• evaporation

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

• filtration
• sieving
• crystallization
• winnowing

Husk is separated from heavier seeds of grain

• a. winnowing
• b. Hand picking
• c. sieving
• d. None of the above

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

• a. Quantity of Sugar
• b. Temperature
• c. Type of water
• d. Amount of sugar dissolved

Which technique is used to purify dirty water?

• a. Centrifugation
• b. Evaporation
• c. Sedimentation
• d. Decantation

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) (i) and (ii)
• (b) (ii) and (iii)
• (c) (i) and (iii)
• (d) (iii) and (iv)

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

• a. Saturated
• b. Unsaturated
• c. Homogeneous
• d. Hetrogenous

Statement A: A mixture of cement and pebbles can be separated by using the sieve with small pores Statement B: A sieve with small pores will allow only small cement particles to pass through and will hold back the pebbles

• a. Statement A is true only
• b. Statement B is true only
• c. Both are false
• d. Both are true