M.Sc. (Semester II) (CBCS) Examination Mar/Apr-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
The size effect can have two causes:-
Statistical, Energetic
Only Energetic
Only statistical
Stress impact
Structure is responsible for the magnetic behavior of ferromagnetic materials.
Magnetic crystal
Magnetic
Magnetic domain
Size dependent
Magnetic domain is region within a magnetic material in which the magnetization is in direction.
Uniform
Zero
One
Two
Luminescence is of light by a substance not resulting from heat.
Volume
Emission
Excitation
Size dependent
Particle size is a notion introduced for comparing of solid particles.
Dimension
Intermolecular bonds
Volume
Size
Magnetism is a class of physical phenomena that are mediated by
Domain
Magnetic field
Spin of electron
Temperature
Q.1

Definition:
07
Dielectric
Coercivity
Ceramic
Nanodisc
Florescence
Magnetic domain
Surface energy
Page 2 of 2
SLR-UV-651
Part II
Answer any four of the following.
Q.2
What is surface stress? Describe the effect on lattice parameter.
14
Q.3
Explain the phenomenon of stimulated Raman and Brillion Scattering.
14
Q.4
Describe the size effect on structure and morphology nanoparticles.
14
Q.5
Explain the non-leaner optical susceptibility and properties of nanomaterials.
14
Q.6
Write a short note about any two.
14
Harmonic generation
Quantum confinement of superlattice
Stimulated Raman scattering
Q.7
Explain in detail about any two.
14
Write a short note on capacitance in nonparticles.
Diffusion in nanocrystalline materials.
Dielectric constant of nonoscale silicon.