Question

(e) When milk, coveU ALI VUL
of separating cream from milk is an example of ............
(1) Impurities settled at the bottom when muddy water was kept overnight in a bucket. The clear wa
then poured off from the top. The process of separation used in this example is called
nort Answer Type Questions
21. What is evaporation ? State one large scale use of the process of evaporation.
22. How will you obtain clear water from a sample of muddy water ?
23. Define solubility of a substance. How does the solubility of a substance vary with temperature ?
24. How is fine sand separated from larger particles ? Explain.
25. How will you separate a mixture of mustard seeds and powdered common salt?
26. How is scrap iron separated from a heap of waste materials in factories?
27. (a) A cup of tea is said to be a mixture. Name its various components.
(b) What is the general name of the process by which tea-leaves are separated from prepared tea ?
28. Define the terms (a) sedimentation, and (b) decantation.
29. Which of the two will dissolve more sugar : cold water or warm water? Why?
30. You are given a mixture of iron filings and sulphur powder. How will you separate them from the
31. Define the terms (a) threshing, and (b) winnowing.
32. (a) State one use of the method of winnowing.
(b) Give one use of the 'hand-picking' method of separating mixtures in daily life.​

Answer 1

Answer:

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