Nalanda Open University
Annual Examination 2016
B.Sc. Chemistry (Honours), Part-III
Paper-VIII
Time: 3.00 Hrs. Full Marks: 80
Answer any five questions. All questions carry equal marks.
1. Discuss the chemistry of UV spectroscopy. Explain the following electronic
transition in ultraviolet spectroscopy.
transition n transition to transition
2. Define the term 'Chromopohre'. How will you detect the presence of 0
group in aldehyde and ketone.
3. What do you understand by term acid rain? What are the sources of acid
rain? Give the theory mechanism of the acid-rain formation. What are
the effects of acid rain?
4. What is soil pollution and soil pollutant? What are the effects of soil
pollutant? How is soil pollution prevented?
5. Write a short note on deshielding and shielding effect with suitable
examples. Describe clearly what do you know about coupling constant?
6. Explain the effect of an harmonicity on vibrational spectra of diatomic
molecule.
7. What is meant by the term chemical shift in an nmr spectrum?
Describe the splitting of signals with suitable example.
8. Differentiate between addition polymerization and condensation
polymerization with suitable example. Write the repeating units in
Neoprene and Teflon polymers.
9. What are chemical fuel? Describe how the Calorific value of a solid fuel
is determined by using a bomb calorimeter.
What are advantages of gaseous fuel over liquid fuel?
10. Write notes on any two of the following
Neoprene
Aviation Gasoline
Swage treatment