Choose the answer. 1.The method of separation of components of a mixture based on the principle of difference in density of substance is _______ a. Evaporation b. Sublimation c.Centrifuging d. Crystallization 2. To separate Camphor and sand mixture we can use__________ a. Centrifuging method b. Sublimation method c.Evaporation d. Crystallization 3. The particles size of consistuent particles in a solution is _______________ a. 10 cm b. more than 10 cm c. less than 10 cm d. 10 cm or less 4. The solution which can dissolve more consistuent particles in a solution is _______ a. Saturation solution b. supersturated solution c. unsaturated solution d. concentrated solution
Answers
Answer:
a)The process of centrifugation is used in dairies to separate cream from milk. Centrifugation is a method for separating the suspended particles of a substance from a liquid in which the mixture is rotated at a high speed in a centrifuge machine.
b)We can separate Salt and Water Using Distillation. We can boil or evaporate the water and the salt will be left behind as a solid. If we want to collect the water, we can use distillation. This works because salt has a much higher boiling point than water.
c)We know that camphor is a sublime substance and sand is not a sublime substance. Thus we can separate camphor from sand by heating the mixture slowly (sublimation). The vapours of camphor should be then collected and cooled down
d)Oil being lighter forms the top layer, while water being heavier forms the bottom layer. Oil can be separated by decantation. However, a more useful method for separating oil and water is with the separating funnel.
Answer:
1.) c
2.) b
3.) a
4.) c
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