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FACULTY OF SCIENCE

B.Sc. II Year (Practical) Examination

Subject : ChemistryPaper : II

QUESTION BANK

W.E.F. Annual 2010

Time : 3 hours} {Marks : 50

I. Write a brief procedure for the following experiment and mention theprinciple involved in it. (5)

1. Estimate the amount of Barium as Barium sulphate gravimetrically in the givensolution using dl H2SO4 or (NH4)2 SO4.

2. Estimate the amount of sulphate as Barium sulphate gravimetrically in the givensolution using Ba Cl2 solution.

3. Estimate the amount of lead as lead chromate gravimetrically in the givensolution using potassium chromate solution.

4. Estimate the amount of Nickel as Ni DMG complex gravimetrically in the givensolution using DMG solution.

5. Estimate the amount of magnesium as magnesium pyro-phosphategravimetrically in the given solution using ammonium phosphate solution.

II. Carry out any one experiment allotted from the following : (35)

(1) Estimate the amount of Na2CO3 present in the given solution.

Your are provided with .(a) a pure sample of Na2 CO3(b) an approximate 0.1 M solution of HCl

(2) Estimate the amount of NaHCO3 present in the given solution.You are provided with(a) a pure sample of Na2CO3(b) an approximate 0.1 M solution of HCl

(3) Estimate the amount of carbonate and bicarbonate in the given mixture.You are provided with

(a) a pure sample of Na2CO3(b) an approximate 0.1 M solution of HCl

(4) Estimate the amount of Ferrous ion present in the given solution(dichrometrically).You are provided with a pure sample of K2Cr2O7 solid.

(5) Estimate the amount of Ferrous ion present in the given solution.You are provided with(a) a pure sample of oxalic acid(b) an approximate 0.02 M solution KMnO4

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