Download PTU (I. K. Gujral Punjab Technical University) MSc -Chemistry 2nd Semester May 2019 75984 SPECTROSCOPY II Question Paper.
1 | M-75984 (S33)-1758
Roll No. Total No. of Pages : 02
Total No. of Questions : 11
M.Sc. (Chemistry) (2018 Batch) (Sem.-2)
SPECTROSCOPY-II
Subject Code : CHL-414-18
M.Code : 75984
Time : 3 Hrs. Max. Marks : 70
INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains EIGHT questions carrying FIVE marks each and students
have to attempt any SIX questions.
3. SECTION-C will comprise of two compulsory questions with internal choice in both these
questions. Each question carries TEN marks.
SECTION-A
1. Write briefly :
a) What do you understand by Stark effect?
b) Write the number of vibrations in case of pyridine, sulphur dioxide, acetylene and
toluene.
c) What is (are) the conditions for Raman active?
d) What is the basic principle of Mossbauer spectroscopy?
e) Why Stokes lines are more intense than anti-Stokes lines?
f) How Nuclear quadrupole resonance (NQR) spectroscopy is different from Nuclear
magnetic resonance (NMR) spectroscopy? Explain.
g) What photoelectron spectroscopy is used for?
h) Which types of molecules are used for electron paramagnetic resonance
spectroscopy? Explain by giving suitable examples.
i) What do you mean by Krammer's degeneracy?
j) How does X-ray photoelectron spectroscopy (XPS) work?
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1 | M-75984 (S33)-1758
Roll No. Total No. of Pages : 02
Total No. of Questions : 11
M.Sc. (Chemistry) (2018 Batch) (Sem.-2)
SPECTROSCOPY-II
Subject Code : CHL-414-18
M.Code : 75984
Time : 3 Hrs. Max. Marks : 70
INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains EIGHT questions carrying FIVE marks each and students
have to attempt any SIX questions.
3. SECTION-C will comprise of two compulsory questions with internal choice in both these
questions. Each question carries TEN marks.
SECTION-A
1. Write briefly :
a) What do you understand by Stark effect?
b) Write the number of vibrations in case of pyridine, sulphur dioxide, acetylene and
toluene.
c) What is (are) the conditions for Raman active?
d) What is the basic principle of Mossbauer spectroscopy?
e) Why Stokes lines are more intense than anti-Stokes lines?
f) How Nuclear quadrupole resonance (NQR) spectroscopy is different from Nuclear
magnetic resonance (NMR) spectroscopy? Explain.
g) What photoelectron spectroscopy is used for?
h) Which types of molecules are used for electron paramagnetic resonance
spectroscopy? Explain by giving suitable examples.
i) What do you mean by Krammer's degeneracy?
j) How does X-ray photoelectron spectroscopy (XPS) work?
2 | M-75984 (S33)-1758
SECTION-B
2. What are the selection rules for vibrational frequency? Discuss applications of vibrational
frequency.
3. Differentiate following :
a) Overtones and combination bands
b) Harmonic and anharmonic oscillators
4. State the selection rules for rotation Raman transitions. Derive expression for Stokes? and
antistokes? lines.
5. Discuss the principles and applications of Mossbauer spectroscopy.
6. Explain briefly the X-ray photoelectron spectroscopy of nitrogen and oxygen.
7. Write a short note on determination of asymmetry parameter with suitable examples for
NQR spectroscopy.
8. What are chemical shifts in XPS? Explain shake up process.
9. Discuss the EPR spectra of methyl radical and pyrazine anion.
SECTION-C
10. Discuss the fundamentals and applications of Nuclear Quadruple Resonance
spectroscopy.
OR
Write a short note on higher spin states of Mossbauer spectroscopy.
11. Explain the factors affecting the magnitude of g value.
OR
Differentiate Ultraviolet photoelectron spectroscopy and X-ray photoelectron
spectroscopy.
NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
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This post was last modified on 05 December 2019