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Direction: Read and analyze each item carefully. Write the letter of the best I correct answer on the space provided before the number. 1. Which of the following can be separated by decantation?
A oil and water C. stone and rice grains
B. salt and water D. iron filings and flour
2. Which condition is necessary for decantation to be used?
A The components are not distinguishable with each other. B. The solute is dissolved completely in the solvent C. The heavier components settle at the bottom D. The mixture is uniform in appearance.
3. Which of the following BEST describes decantation?
A. It used filter paper. B. It allows the mixture to dry out. C. It used magnet to separate the components. D. It allows the particles to settle at the bottom to recover the liquid.
4. Which of the following can be separated by sieving?
A sand and gravel C. iron fillings and sand
B. salt and vinegar D. com grains and palay
5. The following can be separated by sieving EXCEPT:
A rock salt and face powder C. sand and water
B. pebbles and sand D. flour and sugar
6. Which of the following is TRUE about sieving?
A. It uses filter paper. B. It needs the application of heat. C. It allows the liquid to evaporate. D. It uses a wire screen to separate the mixture
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