CBSE Class 9 Chemistry Question Paper SA1 2011 (3)

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CBSE Class 9 Computer Science Question Paper SA 1 2011. Students can download the last year question papers using the link below. Free download of examination question papers with solutions. Last 10 year question papers should be practised to get better marks in examinations.


1.With which name is the phenomenon of changing of a liquid into its vapours at temperature below its boiling point known ?

2.In a high jump athletic event the athletes are made to fall on a cushioned bed. Why ?

3.Explain Tyndall effect. Which type of solutions show Tyndall effect ?

4.What determine the state of a substance ? Suggest a method to liquefy gases. Water droplets are observed on the outer surface of a glass tumbler containing ice cold water. Give reason.

5.State the separation technique you would apply for the separation of the following ?

6 (a) Sodium chloride from its solution in water (b) Tea leaves from tea (c) Iron pins from sand (d) Different pigments from an extract of leaves (e) Butter from curd (f) Fine mud particles suspended in water.

7.(a) A solution is prepared by dissolving 15g of sodium chloride in 200g of H2O. What is the mass by mass percent age of NaCl in this solution ? (b) What is solute and solvent in aerated drinks ? (c) Given a solution of substance ‘A’ how will you test whether it is saturated or unsaturated with respect to ‘A’ at the given temperature


(a) How much water should be mixed with 12mL of alcohol so as to obtain 12% alcohol solution

? (b) How does the particle size vary in a true solution and a suspension ? (c) What is a dispersed phase and a dispersing medium in a colloid ?

Please click the link below to download pdf file of CBSE Class 9 Chemistry Question Paper SA1 2011 (3).


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