Questions


October 2022 2 3 Report
d. chromatography d. all of the above separate them using decantation d. It will become sch methods 13. Which one of the following techniques would best be used to separate soll and water? a.filtration b.distillation c. decanting substance from a denser one. 14. This method is a technique used in separating a less-dense a. evaporation b. decantation c. picking 15.What will happen to the less-dense substance of mixtures if you a. it will evaporate b. it will float up C. remain the same 16.In the process of decantation, the mixtures is left. ? a. behind b. undisturbed C. removed d. none of the above 17. How can decantation method be useful in everyday living? a.it help us to become more productive C. It just an ordinary technique d. sometimes C. maybe d. water c. sieve a. d. by evaporation c. filtration b.it gives us satisfaction to our everyday living s d.It helps us to make our everyday living more efficient and ease 18.1s decantation method applicable to all types of mixtures? a. yes b. no 19. Metal and non-metal objects can be separated by using a filter b. magnet 20. How will you separate mixture of metal and nonmetal objects? a. by decantation b. by winnowing c. by using a magnet 21. Needle in sawdust can be separated by means of d. sifting a. decantation b. magnetic separation 22. How will you separate mixture of staple wire and chalk powder? a. by decantation b. by winnowing c. by using a magnet d. by evaporation 23. Mrs. Cruz's needle was mixed with bits of paper. How will she separate the needle safely from the bits of paper? a. by decantation b.by winnowing c. by using a magnet d. by evaporation 24. How will you separate paper clips and thumbtacks from flour? a. by using magnet b. by using a sieve in c. by using a filter paper dby using filter paper 25. Which of the following best describes a magnet when used to separate mixtures? a. It can separate metals from nonmetals. C. It can separate larger particles b. li can separate nonmetals objects. d. It can separate smaller particles. 26. when mixed with non-metals, could be separated by magnet. a. rubber b. plastic C. Water d. metals 27. Mecals which are made up of are easily attracted to the magnet. a. alloy, nickel or cobalt c. salt rubber, plasio b. paint, water or powder d. gold, ruby, diamond 28. There is no involved in the separation of components in magnetism. a. physical reaction b.mechanical reaction c.chemical reaction d. acid reaction 29. What process is being shown? 3. decantation c. distillation b. sieving d. filtering 30. The picture shows the process of separating liquid to gas. What do you call this kind of process? decantation C. evaporation b. sieving d. filtering​

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