Question

You might have observed the preparation of ghee from butter and cream at home. Which method(s) can be used to separate ghee from the residue? ​

(i) Evaporation ​
(ii) Decantation ​
(iii) Filtration ​
(iv) Churning ​

Which of the following combinations is the correct answer? ​

• A. (i) and (ii)​
• B. (ii) and (iii)​
• C. (ii) and (iv)​
• D. (iv) only​

Answer 1

The correct option is B (ii) and (iii)​

Decantation can be used to separate immiscible liquids that have different densities.​

Filtration is a process, that is used to separate solids from liquids or gases, using a filter medium that allows the fluid to pass through; but not the solid.​

The mixture is composed of two different materials of different states (ghee is liquid and the residue is solid) thus these two methods would be most appropriate. ​