11. What technique is used to separate water and fine sands?
A sedimentation
B. decantation
C.evaporation
D. filtration
12. Which of the following is used to filter impurities in water?
A ladle
B. katsa /cheese cloth
C. filter paper
D. B and C
13. Does filtration important in our daily life? why?
A. No, because there is nothing to worry when we do not filter impurities B. Yes, because we should separate the impurities or unwanted substance in a mixture
C. Maybe, because I am not sure
D. No, because my mother doesn't care at all
14. Why do we need to filter tap water? A. because there is dirt in tap water
B. because my mother told me
C. because it is necessary to remove impurities
D. A and C
15. Sand and water can be separated through
A. sieving
B. decanting
C. filtering
D. magnet
16. How can you separate coco milk and coco meat?
A. by sieving
B. by filtering
C. by picking
D. sedimenta
17. Can a mixture of pebbles and sand be separated by filtering?
A. yes
B. no
C. maybe
D. A and B​