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Pune University - SY BSc (Sem - II) CHEMISTRY : Analytical Chemistry, April 2010

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Total No. of Questions :4] [Total No. of Pages : 2 [3717] - 206 S.Y. B.Sc. CHEMISTRY CH - 222 : Analytical Chemistry (51322) (Sem. - II) (New Course) P484 Time :2 Hours] [Max. Marks : 40 Instructions to the candidates: 1) All questions are compulsory. 2) Figures to the right indicate full marks. 3) Use of logarithmic tables and calculator is allowed. 4) Neat diagrams must be drawn wherever necessary. Q1) Answer the following : [10] a) Distinguish between dry ashing and wet ashing. b) Concentrated HCl can not be used in place of dilute HCl as a group reagent for group I. Why? c) What is a functional group? d) Define Equivalence point in volumetric analysis. e) What are the disadvantages of starch indicator? f) Define the term standard deviation. g) How is Tollen s reagent prepared? h) Which is a group reagent for III B group? i) Give any two advantages of solvent extraction. j) Why should a primary standard substance have a high molecular weight? Q2) a) Answer any two of the following : [6] i) ii) Write a note on borate removal scheme in qualitative analysis. iii) b) Explain applications of solvent extraction. Explain the method of estimation of copper in crystallised copper sulphate. 0.450 gm of an organic compound gave 0.5 gm of silver chloride in a carius estimation. Find the percentage of chloride in the compound.[4] P.T.O.

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Additional Info : S.Y. B.Sc. Chemistry (Semister - II), CH - 222 : Analytical Chemistry (New Course), Pune University
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