Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 7th Sem New 2170508 Nano Technology Previous Question Paper
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE ? SEMESTER ? VII (NEW) EXAMINATION- WINTER 2018
Subject Code: 2170508 Date: 29/11/2018
Subject Name: Nano Technology
Time: 10:30 AM to 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Differentiate Wet and Dry Etching. 03
(b) Briefly elaborate the potential applications of nanodimensional materials
in security, life science and electronics.
04
(c) Briefly compare between ?Top-down? and ?Bottom-up? approaches of
fabrication of nanomaterials. Give examples of reduced dimensionality
system (1D, 2D and 3D confinements).
07
Q.2 (a) Classify the vapor deposition techniques used in Nano-technology. 03
(b) Briefly explain with an example the synthesis of nanomaterials in
structured media.
04
(c) Discuss the differences between scanning electron microscopy (SEM)
and transmission electron microscopy (TEM).
07
OR
(c) Describe spray pyrolysis method for synthesis of ceramic nanopowder. 07
Q.3 (a) Discuss application of Nano oxide as protective coatings. 03
(b) Discuss chemicals used in Etching. 04
(c) Discuss Co-precipitation method for making Nano-particles. 07
OR
Q.3 (a) Discuss steps of Nano-lithography. 03
(b) Discuss Fabrication of Nano-wires using Template fabrication. 04
(c) Discuss the effect of nanometer length on the physico-chemical
properties of materials such as diffusivity, solubility, elastic properties,
melting point etc.
07
Q.4 (a) Discuss the principle of Atomic force Microscope 03
(b) State a few safety and storage considerations of nanomaterial. 04
(c) Enlist the general methods of preparation of quantum dots of compounds
semiconductors. Illustrate any one in details.
07
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1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE ? SEMESTER ? VII (NEW) EXAMINATION- WINTER 2018
Subject Code: 2170508 Date: 29/11/2018
Subject Name: Nano Technology
Time: 10:30 AM to 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Differentiate Wet and Dry Etching. 03
(b) Briefly elaborate the potential applications of nanodimensional materials
in security, life science and electronics.
04
(c) Briefly compare between ?Top-down? and ?Bottom-up? approaches of
fabrication of nanomaterials. Give examples of reduced dimensionality
system (1D, 2D and 3D confinements).
07
Q.2 (a) Classify the vapor deposition techniques used in Nano-technology. 03
(b) Briefly explain with an example the synthesis of nanomaterials in
structured media.
04
(c) Discuss the differences between scanning electron microscopy (SEM)
and transmission electron microscopy (TEM).
07
OR
(c) Describe spray pyrolysis method for synthesis of ceramic nanopowder. 07
Q.3 (a) Discuss application of Nano oxide as protective coatings. 03
(b) Discuss chemicals used in Etching. 04
(c) Discuss Co-precipitation method for making Nano-particles. 07
OR
Q.3 (a) Discuss steps of Nano-lithography. 03
(b) Discuss Fabrication of Nano-wires using Template fabrication. 04
(c) Discuss the effect of nanometer length on the physico-chemical
properties of materials such as diffusivity, solubility, elastic properties,
melting point etc.
07
Q.4 (a) Discuss the principle of Atomic force Microscope 03
(b) State a few safety and storage considerations of nanomaterial. 04
(c) Enlist the general methods of preparation of quantum dots of compounds
semiconductors. Illustrate any one in details.
07
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2
OR
Q.4 (a)
Discuss type of Micro Emulsion.
03
(b) What is quantum dot? Give examples and state its industrial uses. 04
(c) Explain the principle of X-ray Diffraction analysis. What kind of
information would you expect from the X-ray diffractogram.
07
Q.5 (a) What is nanosensor? Discuss theory advantages over their micro-scale
and macro-scale counterparts.
03
(b) Discuss various application of Nano-technology in medical Science. 04
(c) Write a short note on any one (i) Grain Boundary engineering Or Zenner
Pinning (ii) Nanocatalysts
07
OR
Q.5 (a) State the laws of crystallography. What is a Miller index? 03
(b) State if there is any disadvantage of using nanomaterials. 04
(c) Explain vapor condensation method for production of nanoparticles 07
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This post was last modified on 20 February 2020