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3. Insoluble materials like sand and flour can be separated from water by ________. *
A. filtering
B. heating
C. scooping
D. using magnet
4. When you opened the faucet you found out that the water flowing from it had many foreign substances like fine and coarse sand. You wanted to purify the water and separate the fine and coarse sand as well. Which of the following are the two processes you need to apply? *
A. Distillation and decantation
B. Evaporation and distillation
C. Filtration and evaporation
D. Filtration and sieving
5. You wanted to separate the materials mixed with rice like husks and small stones. Which process is the best way to use? *
A. Decantation
B. Distillation
C. Hand picking
D. Using magnet
6. To obtain pure or distilled water which is safe to drink, water from sources should undergo boiling and condensing method. This process is called _____________ *
A. chromatography
B. decantation
C. distillation
D. flotation
7. The illustration of the filtration process that include the following materials like filter paper, funnel, muddy water and clean glass. Which of the following materials filtered the water? *
Captionless Image
A. Filter paper
B. Funnel
C. Glass
D. water
8. What kind of separation technique is shown in the picture? *
Captionless Image
A. Decantation
B. Distillation
C. Evaporation
D. Sieving
9. If the mixture is composed of solid materials that have the same sizes. What separating technique will you use to separate them? *
A. Decantation
B. Evaporation
C. Filtration
D. Physical Manipulation/hand picking
10. Grease also floats on water. How are we able to remove grease from water? *
A. by scooping them
B. by heating them
C. by using filtered paper
D. by sieving them
