M.Sc.(Semester II) (CBCS) Examination Oct/Nov-2017
Materials Science
ANALYTICAL TECHNIQUES
Day Date: Friday, 24-11-2017 Max. Marks: 70
Time: 10:30 AM to 01.00 PM
Instructions: Q. No. and Q. No are compulsory.
Attempt any three from Q. No. to Q. No.
Q.1

Objective questions:-
Choose correct alternative:
14
08
In case of tetragonal crystal system
a b c a b≠c
a b c a c
2 In case of rhombohedral crystal system
≠120 90
=120 ≠90
3 The range of Far IR is
0.025 0.5 mm 0.25 5 mm
0.25 0.5 mm 0.025 mm
4 IR absorption occurs due to
Change in electron configuration
Symmetric vibrations
Asymmetric vibrations
None of above
5 The range of visible spectra extends over
400 nm to 800 nm 200 nm to 800 nm
200 nm to 400 nm 150 nm to 200 nm
6 The transmission coefficient T is defined as
I/Io 1/K
Log I/Io
The law that relates to the absorption due to solutions is
Beer's Law Lambert's Law
Ferries Law Both a and b
In XPS, photoelectrons are produced using
X-rays β-rays
γ-rays rays
Page 2 of 2
SLR-MO-525
Fill in the gaps:- 03
The indices 1 are coefficient of a vector perpendicular
to that plane.
The interplaner distance increases with hkl.
radiations are heat radiations.
State True False:- 03
Number of atoms per unit primitive cell depends on the type of
crystal system.
UV radiations are heat radiations.
The simple cubic has a coordination number of 6 and contains 1
atom per unit cell.
Q.2 Attempt the following:- 14
What is crystal symmetry and reciprocal lattice? 05
Beer Lamberts Law 05
Write note on Energy losses in XPS. 04
Q.3 What do you mean by lattice? How many different crystals systems are
possible in nature i.e. the lattice could be extended in three dimensions?
10
Calculate the volume of (a1. a2 x a3) for S. C. system 04
Q.4 Explain determination of particle size using X-ray diffractogram. 10
Show basic unit cell, define vectors c or (a1 a2 a3) and angles

04
Q.5 Describe basic instrumentation setup for UV-VIS spectro photometer. 10
Explain sources of UV and VIS radiations. 04
Q.6 Explain the basic principle and instrumentation of Raman Spectroscopy. 10
Write a note on Stokes's and Anti Stokes lines Raman spectrum. 04
Q.7 Describe the basic principle and instrumentation for the XPS system 10
Write note on chemical shift in XPS. 04