Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Winter 5th Sem 3152112 Nano Materials Previous Question Paper
Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER?V (NEW) EXAMINATION ? WINTER 2020
Subject Code:3152112 Date:03/02/2021
Subject Name:Nano Materials
Time:10:30 AM TO 12:30 PM Total Marks: 56
Instructions:
1. Attempt any FOUR questions out of EIGHT questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Marks
Q.1 (a) Differentiate between Conventional material and Nanomaterials.
03
(b) Give classification of Nanomaterials based on its Structures.
04
(c) "There is plenty of room at the Bottom" ?discuss this statement with
07
suitable example.
Q.2 (a) Define- Nanotechnology and give example of any company using
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Nanotechnology for its product.
(b) Discuss how nanomaterials are foreseen as promising materials for
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future technology.
(c) What is nanostructured bulk material ? Draw and explain with suitable
07
schematics.
Q.3 (a) List out various Synthesis routes for fabrication of nanomaterials.
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(b) Why fabrication of Nanomaterials is different from that conventional
04
materials fabrication methods?
(c) Differentiate between "Bottom-Up" and "Top- Down" approach of
07
fabrication of nano materials with suitable schematic and examples.
Q.4 (a) Draw schematic of 1D Structure-2D Structure and 3D structure.
03
(b) Explain the ?"Inverse Hall petch relationship" with respect to
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Nanomaterials with graph.
(c) What is "Nano-size induced effect" on Melting point, Surface area to
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Bulk volume ratio and on optical properties?
Q.5 (a) Briefly explain-How Properties of Nanomaterials are different than
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their properties at bulk state ?
(b) Write short note on "Sol-gel" synthesis route for creation of
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nanomaterials.
(c) Explain High energy Ball Milling Process for production of
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Nanopowders. What are the use and application of Nano powders?
Discuss with suitable example.
Q.6 (a) List out various Carbon Nanostructures and draw schematics of each.
03
(b) What is Super-plasticity phenomena? Discuss.
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(c) What is "Quantum confinement"? Differentiate between Quantum
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wells, quantum wires and quantum dots.
Q.7 (a) What are the potential application of Carbon nanotube (CNT) for
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Nuclear energy process. ?
(b) Write Short note on Nanocomposite materials.
04
(c) Discuss ?Ferro-magnetism, para-magnetism and Di-magnetism. What
07
is the use of magnetic materials in electronics Industries?
1
Q.8 (a) Give definitions of Cluster, Colloids, Nano-particles and nano-crystal.
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(b) List out the sophisticated equipment to characterize Nanostructures.
04
(c) List out few applications of Nanotechnology in 1. Sports goods and
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equipments 2. Health care and medicine 3. Consumer products 4.
Automobiles and Aerospace 5. Electronics 6. Textiles. 7. Nuclear
power Industries.
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This post was last modified on 04 March 2021