B.Sc. (II YEAR) SEMESTER-IV CHEMISTRY MODEL QUESTION PAPER ADIKAVI NANNAYA UNIVERSITY
https://www.computersprofessor.com/2017/04/bsc-ii-year-semester-iv-chemistry-model.html
ADIKAVI NANNAYA UNIVERSITY
MODEL PAPER
THREE YEAR B.Sc. DEGREE EXAMINATION
SECOND YEAR EXAMINATIONS
SEMESTER IV
Paper – IV : SPECTROSCOPY & PHYSICAL CHEMISTRY
Time: 3 hours Maximum
Marks: 75
PART- A
Answer any FIVE of the
following questions.Each carries FIVE marks
5 x 5 = 25 Marks
1.
Write
Beer-Lambert’s law and its limitations
2.
Explain
the concept of chromophore.
3.
Write
a note on chemical shift in NMR spectroscopy.
4.
Explain
about VantHoff’s factor.
5.
What
is Raoult’s law?
6.
Write
about Ostwald’s dilution law
7.
Explain
about hydrogen electrode with a neat diagram.
8.
Draw
the phase diagram of Pb-Ag system.
PART- B
Answer ALL the
questions.Each carries TEN marks. 5 x 10 = 50
Marks
9.
(a)
How do you estimate the amount of chromium in potassium dichromate and
manganese in manganous sulphate spectrophotometrically
(OR)
(b) i) Write the selection rules for
electronic spectra.
ii) How does conjugation effect λmax.?
10. (a) What is finger print region in IR
and discuss its significance in structure elucidation
(OR)
(b) Write the principle and applications of
NMR spectroscopy.
11. (a) What is
meant by osmotic pressure? Describe any one method of determination of osmotic pressure of a dilute solution.
(OR)
(b) What is
Ebullioscopic constant? Derive the relationship between elevation in the
boiling point and the molecular weight of the solute.
12. (a) Define Kohlrausch’s law. Write any two applications
of it.
(OR)
(b) Define transport
number. How do you determine it by Hittorf’s method?
13. (a) Write about potentiometric titrations with one
example.
(OR)
(b) State phase rule.
Draw a neat phase diagram of water system and explain different parts of the
system.