Dr Ram Manohar Lohia Avadh University 2008 B.Sc Chemistry first - Question Paper
Dr.R.M.L.Avadh University Mark- 50
B.Sc. IIIrd year
Year 2008
Paper I: General Chemistry, Molecular Spectroscopy and Analytical chemistry
Note-Answer any 3 ques. from Section-A and 5 ques. from Section-B
.Section-A
1-A) What are the possible symmetry elements and symmetry operations for a molecule
belonging to C2v point group? [5-marks]
B) Construct a group multiplication table for C2v point group taking H2O as
an example. [5-marks]
2. A) discuss isotopic exchange and kinetic method for the determination of organic and
inorganic reaction mechanism.[5-marks]
B) Draw Orgel energy level diagram for d1 state. provide its utility.[5 mark]
3. explain the vibrational spectrum of a diatomic molecule taking it as a simple harmonic
oscillator. What is zero point energy?[10-marks]
4 A) What is Raman spectrum? Name the various kinds of lines current in it and discuss
the reasons for observing this lines.[5-marks]
B) Which of the subsequent molecules would provide you pure rotational
Raman spectrum?[5 mark]
H2, H2O, CH4, N2, SF6
5. A) What do you mean by the term chemical shift? Name the different factors on which the value of chemical shift depends. explain in detail.[10-marks]
part -B
1.Explain the principle of microwave spectroscopy. What is selection rule?[4-marks]
2.What do you mean by shielding and deshielding of protons? [4-marks]
3.Discuss the reasons and effects of pollution caused by oxides of
carbon and sulphur. [4-marks]
4.Discuss the separation of metal ions by paper chromatography. [4-marks]
5.How will you distinguish ranging from subsequent pairs of compounds on the basis of IR spectroscopy?- [2+2 =4marks]
I. Ethyl Alcohol and Diethyl Ether
II.Acetic Acid and Ethyl Acetate
6.What are electromagnetic radiations? provide various regions of Electromagnetic
Spectrum along with their frequency range. [4-marks]
7.What are stokes and Antistokes lines? Why is the intensity of stokes lines is generally greater than antistokes lines. [4-marks]
Dr.R.M.L.Avadh University Mark- 50
B.Sc. IIIrd year Year 2008
Paper I: General Chemistry, Molecular Spectroscopy and Analytical chemistry Note-Answer any three questions from Section-A and five questions from Section-
 |
|
determination of organic and |
.Section-A
1- A) What are the possible symmetry elements and symmetry oper molecule
belonging to C2v point group? 5 mark B) Construct a group multiplication table for C2v point gi ptang H2O as An example. 5-marks
2. A) Explain isotopic exchange and kMeticmethf Inorganic reaction mechanism. 5-mark %
B) Draw Orgel energy lev 3. Discuss the vibratio
or d1 state. Give its utility 5-mark
of a diatomic molecule taking it as a simple harmonic
Oscillator. WhitJ|elfiPoint energy? 10-mark
4. A) WhltsRamjpspectrum? Name the different types of lines present in it and explain is for observing this lines.5-mark
)f the following molecules would give you pure rotational
aman spectrum? 5-mark
H2, H2O, CH4, N2, SF6
5. A) What do you mean by the term chemical shift? Name the various factors on which the value of chemical shift depends. Discuss in detail. 10-marks
Section -B
1. Explain the principle of microwave spectroscopy. What is selection rule? 4-mark
2. What do you mean by shielding and deshielding of protons? 4-marks
3. Discuss the reasons and effects of pollution caused by oxides of
I. Ethyl Alcohol and Diethyl Ether
II. Acetic Acid and Ethyl Acet
6. What are electromagnetic radiatlins? Give 'different regions of Electromagnetic Spectrum along with their frequency jinge. 4-mark
7. What are stokes and AntHtokfisJineilK Why is the intensity of stokes lines is generally
j . I........!.. j
greater than antistokes Iinesl4-taark
 |
|
basis of IR |
Carbon and sulphur. 4-mark
4. Discuss the separation of metal ions by paper chromatography. 4-m;
5. How will you distinguish between following pairs of comj spectroscopy?- 2+2 =4mark
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