CBSE Class 9 Chemistry Question Paper SA1 2011 (5). 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.
Class – IX (Chemistry)
1.Why does the level of water not change when common salt is dissolved in water ?
2.An unbalanced force is acting on an object. List the possible effects that will be caused in the motion of object.
3.State the full form of ATP. ATP
4.What mass of water must be added to 5 g of NaCl to make 5% mass by mass percentage of the solution. 5% 5 g NaCl
8.Solubility of potassium nitrate at 313 K is 62 g. What mass of potassium nitrate would be needed to produce a saturated solution of KNO3 in 50 g of water at 313 K ? What is the effect of change of temperature on the solubility of a salt ?
9.How will you separate common salt, sulphur powder and sand from their mixture ?
10.(a) A solution contains 50 mL of alcohol mixed with 150 mL of water. Calculate the concentration of this solution. (b) Write any two characteristics of colloidal solution.
(a) Write the steps involved in the process of obtaining pure copper sulphate from an impure sample. (b) Give any one application of this method. (c) Why is this technique better than simple evaporation to purify solids ?
11.(a) What is matter ? (b) “The rate of diffusion of liquids is higher than that of solids.” Why ?
(c) Write two properties of gases and two properties of solids. (d) Write the full form of : (i) LPG (ii) CNG
Define boiling point of a liquid. At what temperature in the Kelvin scale does water boil ?
Explain what happens when we supply heat energy to water till it changes its state. What is this heat energy called ?
Please click the link below to download pdf file of CBSE Class 9 Chemistry Question Paper SA1 2011 (5).