Question

2. Which technique is used to purify dirty water?
a. Centrifugation
b. Evaporation
c. Sedimentation
d. Decantation
3.A mixture of salt, sand, oil and water is given ,which of these sequence can be used to separate
salt.
a. Decantation -> Filtration -> Evaporation
b. Filtration -> Evaporation -> Condensation
c. Filtration -> boiling ->Decantation
d. None of the above.
​

Answer 1

2--decantation

3--. A

Answer 2

Answer:

2. (c) sedimentation

3. (b)