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B.TECH DEGREE EXAMINATION DEC-2010
THIRD SEMESTER
CY 9213 INSTRUMENTAL METHOD OF ANALYSIS
PART A-(10*2=20MARKS)THIRD SEMESTER
CY 9213 INSTRUMENTAL METHOD OF ANALYSIS
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1. What are the advantages of doubhle beam spectrometer over single beam spectrometer?
2. Which among the following is IR active? Why?
a.carbon dioxide
b.nitrogen
c.hydrogen
3. What is meant by excitation interference and how is it eliminated?
4. How will you carry out the quantitative analysis of two component system where there is a single way overlap?
5. what is the difference between DTA and DSC.
6. Write differences between Raman and IR spectroscopic techniques.
7. Why is it necessary to use a guard column in HPLC?
8. Define Rt, Rv,and Rf.
9. Draw the energy level diagrams of iodomethane and methane
10. Write the chemical reactions involved in the determination of nitrite.
Part B [5*16=80marks]
11. Derive Beer-Lambert equation and discuss the various deviations[Marks 16]
12(Ia)(i) Draw and explain all the spectrophotometric titration curves.[Marks 8]
(ii) Discuss the methodology of determination of nickel ion present in water by using visible spectrophotometer.[Marks 8]
(or)
12(b) Calculate the lambda max for the compounds using Woodward Fieser rules[Marks 16]
13(a) With a schematic of an atomic absorption spectrophotometer, explain the principle, instrumentation and interferences.[Marks 16]
(or)
13(b) Discuss theory, principle and applications of IR spectrophotometry.[Marks 16]
14(a)(i) Explain the technique of Raman spectrophotometry[Marks 8]
(ii)Write the differences between AAS and FES.[Marks 8]
(or)
14(b) Discuss the instrumentation of TGA and explain each portions of the thermo grams of any two organic compounds.[Marks 16]
15(a)(i) Discuss the theory of separation of any mixture using column chromatography.[Marks 8]
(ii)How will you separate the mixture of Cu, Co, Ni using paper chromatography.[Marks 8]
or
15(b) with a schematic of a HPLC discuss the theory of separation, instrumentation and applications of HPLC[Marks 16]
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