M.Sc. (Semester II) (CBCS) Examination Nov/Dec-2018
Nano-Technology
PROPERTIES OF NANOMATERIALS
Time: 2½ Hours Max. Marks: 70
Instructions: Part-I, question 1 is compulsory.
Attempt any four questions from Part II
Figures to the right indicate full marks.
Answers to the Part I and Part II are to be written in same answer
Booklet only.
PART I
Q.1 Rewrite the sentence after choosing correct answer from the given
alternatives:
07
Surface-area-to-volume ratio, also called the
Volume Surface-to-volume ratio
Ratio Size dependent
Fluorescence is the emission of light by a substance that has
light.
Absorbed Emit
Desorb Color
Thermoluminescence is a form of luminescence that is exhibited by
certain
Intermolecular bonds Absorption
Amorphous materials Crystalline materials
Magnetic domain is a region within a magnetic material in which the
magnetization is in direction.
Uniform Zero
One Two
structure is responsible for the magnetic behavior of
ferromagnetic materials.
Magnetic crystal Magnetic
Magnetic domain Size dependent
Magnetism is a class of physical phenomena that are mediated by

Domain Magnetic field
Spin of electron Temperature
Particle size is a notion introduced for comparing of
solid particles.
Dimension Intermolecular bonds
Volume Size
Page 2 of 2
SLR-VT-530
Q.1 Define the following terms. 07
Surface energy
Nanocrystal
Fluorescence
Quantum dots
Non-leaner optics
Nanoceramics
Plasticity
PART II
Answer any four of the following:
Q.2 Explain the equilibrium shape of macroscopic and nanoscopic crystals. 14
Q.3 What is thermo-luminescence? Write photoluminescence properties of
nanoparticles.
14
Q.4 Explain the non-leaner optical susceptibility and properties of nanomaterials. 14
Q.5 Describe the thermal activation and superparamagnetic effects in
nanomaterials.
14
Q.6 Write notes on any two: 14
Harmonic generation
Stimulated Raman Scattering
Quantum confinement of superlattice
Q.7 Attempt any two of the following:- 14
Explain the dielectric behavior of nanoscale silicon.
Write a short note on capacitance in nanoparticles.
Discuss diffusion mechanism in nanocrystalline materials.