Download GTU BE/B.Tech 2018 Winter 3rd Sem New 2133903 Synthesis Of Nanomaterials I Question Paper

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Seat No.:

Enrolment No.

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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-III (New) EXAMINATION — WINTER 2018
Subject Code: 2133903
Subject Name: Synthesis of Nanomaterials-I
Time: 10:30 AM TO 01:00 PM

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Instructions:

1. Attempt all questions.
2. Make suitable assumptions wherever necessary.

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3. Figures to the right indicate full marks.

1. (a) Define 0-D Nano materials. 03
   (b) Particle is always spherical or not, justify the question. 04
   (c) Define the roll of free carrier gases in evaporation 07
2. (a) Define 2-D Nano materials. 03
   

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   (b) Define Bottom—up approach. 04
   (c) Explain the tin plating technique. 07
   OR
   (c) Describe Sol-Gel process. 07
3. (a) Define Nano magnets. 03
   

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   (b) Explain Metal CVD 04
   (c) Write a short notes on Nano tubes 07
   OR
   (a) Give the name of technique of bottom-up approach. 03
   (b) Explain quantum confinement effect on Nano materials. 04
   

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   (c) Classify Nanomaterials on the basis of shape and size. 07
4. (a) Write examples of 3-D Nano materials. 03
   (b) Explain the use Nano semi-conductive material in electrical industry widely. 04
   (c) Describe Nano crystalline ceramics. 07
   OR
   

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   (a) Why we use laser as a prominent source of many synthesis technique. 03
   (b) Discuss the crucial parameter in CVD technique. 04
   (c) How many problem faces CVD, when we talk about the mass production. 07
5. (a) Define 1-D Nano materials 03
   (b) Explain metal Nano particles 04
   

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   (c) Explain top-down approach 07
   OR
   (a) Explain decomposition. 03
   (b) Describe the properties of thin film 04
   (c) Is thin film faces the problem of brittleness or ductility with reference to size reduction? Give the answer in yes or no with perfect reason. 07

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