One method by which the components of air can be separated is

A. shaking with caustic soda solution

B. shaking with water

C. fractional distillation of liquid air

D. passing air over heated magnesium

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  8. Which one of the following is used for dry cleaning?
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  18. Calamine is a ore of
  19. PAS is a drug used In the treatment of
  20. Boiler scales' contain
  21. Which of the following is not a chemical change?
  22. The process of heating steel to bright red heat and cooling suddenly by plunging it into water is known…
  23. Triple Antigen treatment for children is to ward off
  24. Bordeaux mixture contains
  25. Iodine in alcohol is known as
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  27. The compound which is both an antiseptic and a disinfectant is
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