B.Sc-B.Sc Chemistry 3rd Year spectroscopy and analytical (Dr Ram Manohar Lohia Avadh University, Faizabad-2009)
Dr.R.M.L.Avadh University Mark- 50
B.Sc. IIIrd year
Year 2009
Paper I: General Chemistry, Molecular Spectroscopy and Analytical chemistry
Note-attempt ques. No. one which is compulsory and 4 more from the rest .Marks allotted to every ques. are provided against it.
1- A) What are common toxic elements? explain their effects in the environment.[1-marks]
B) explain the number of various symmetry elements in benzene molecule.[1-marks]
C) discuss how monuments are damaged by pollutants.[1-marks]
D) discuss how a few nuclear disintegrations become self-sustaining.[1-marks]
E) How do kinetic methods determine the reaction mechanism? [1-marks]
F) State Born-Oppenhiemer approximation.[1-marks]
G) How is I.R spectroscopy employed for watching the progress of a chemical change?[1-marks]
H) What is isotope effect in rotational spectra?[1-marks]
I) Is melting point actual criteria of purity of a substance?[1-marks]
J) discuss in brief the shielding and deshielding of protons.[1-marks]
2.What is electromagnetic radiation? define the different regions of electromagnetic radiation concerned with the corresponding spectroscopic techniques.[10-marks]
3. explain the rotational spectrum of a diatomic rigid rotor. How is the bond-length of a molecule determined by it?[10-marks]
4. A) Write down the kinds of electronic transitions and selection rules for d-d transitions.[5-marks]
B) explain the electronic spectrum of [Ti(H2O) 6]3 complex.[5-marks]
5. A) What is the basic principle of thin layer chromatography? define its applications.
[5-marks]
B) State Lambert-Beer‘s legal regulations and provide the applications of Colorimetric analysis.[5-marks]
6.What are Raman spectra? explain the origin of Raman lines.[10-marks]
7.What are radio isotopes? How are they separated? provide their applications.[10-marks]
8.What are the symmetry operations? discuss them with suitable examples.[10-marks]
9.What do you mean by chemical shift? explain the PMR spectra of ethyl bromide.[10-marks]
10.Write short notes on any 4 of the following-[2.5+2.5+2.5+2.5=10-marks]
A)Photochemical pollutants
B)Degree of freedom
C)Polarisibility of molecule
D)Franck –Condon Principle
E)Polarography and its applications.
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1-mark
1-mark
1-mark
1-mark
1-mark
C) Explain how monuments are damaged by pollutants.
D) Explain how some nuclear disintegrations become se
E) How do kinetic methods determine the reactionecr
F) State Born-Oppenhiemer approximation.
G) How is I.R spectroscopy employed fpfcwl iHg the progress of a chemical change? 1-mark
H) What is isotope effect in ro ifetra? 1-mark
I) Is melting point true...criteriajof purity of a substance? 1-mark J) Explain in briefjORe sHMding and deshielding of protons. 1-mark
Dr.R.M.L.Avadh University Mark- 50
B.Sc. IIIrd year Year 2008
Paper I: General Chemistry, Molecular Spectroscopy and Analytical chemistry
Note-Attempt Question No. 1 which is compulsory and four more from the rest .Mar to each question are given against it.
1- A) What are common toxic elements? Discuss their effects in the environmenty
f 1......uJ1
B) Discuss the number of different symmetry elements in benzine moleculeji
ov
J|i:
l||B|cUlS|Ohe rotational spectrum of a diatomic rigid rotor. How is the bond-length of a moi|Uli determined by it? 10-mark
4. A) Write down the types of electronic transitions and selection rules for d-d transitions.5-mark
2. WhatJJiseflctromB.gnetic radiation? Describe the various regions of electromagnetic radiafeononiemed with the corresponding spectroscopic techniques. 10-mark
B) Discuss the electronic spectrum of [Ti(H2O) 6] complex. 5-mark
5. A) What is the basic principle of thin layer chromatography?Describe its applications. 5-mark
B) State Lambert-Beers law and give the applications of Colorimetric analysis. 5-mark
6. What are Raman spectra? Discuss the origin of Raman lines. 10-mark
7. What are radio isotopes? How are they separated? Give their application
8. What are the symmetry operations? Explain them with suitable ex;
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9. What do you mean by chemical shift? Discuss the PMR spectra of ethyl bromide. 10-mark 10. Write short notes on any four of the followin |
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+2.5=10 mark |
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A) Photochemical pollutants
B) Degree of freedom
C) Polarisibility of molecule
D) Franck -Condon Prin
E) Polarography and its
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Attachment: |
| Earning: Approval pending. |
