Jawaharlal Nehru Technological University Hyderabad
Jawaharlal Nehru Technological University Hyderabad B.Tech III Year SCIENCE AND TECHNOLOGY OF NANO MATERIALS Previous Question Paper (May - 2019 - R16)
Note: This question paper contains two parts A and B. Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.
Part A
What are the future challenges of nanotechnology?
Answer
The future challenges of nanotechnology include ensuring environmental safety and toxicity management, addressing ethical and societal implications, achieving precise control over atomic-scale manufacturing, and overcoming the high costs associated with large-scale production.
State any three applications of nanotechnologies.
Answer
- Medicine: Targeted drug delivery systems for cancer treatment.
- Electronics: Development of high-speed, low-power nano-transistors.
- Energy: Improving the efficiency of solar cells and battery storage capacity.
What is the effect of band gap in nanotechnology?
Answer
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Why the colour of gold changes when it in nanosized?
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Mention any two synthesis methods of nano materials.
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Give any three Physical synthesis methods to synthesis of nano materials.
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State any two textile application based on nanotechnology.
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What is the basic principle used in nano- paints?
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What is the importance of GaN Nanowires.
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What is the importance of multilayered films?
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Part B
Write a note on History and Scope of nanotechnology.
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What is the role of the nanotechnology on society?
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Write an essay on classification of nanostructural materials.
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Write an essay on unique properties of nano-materials.
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Write an essay on microstructure and defects in nano-crystalline materials.
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Write an essay on Bottom up approaches to synthesis of nano structures.
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Write an essay top down approaches to synthesis of nano structures.
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Explain the applications of nanomaterials in defences space.
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What are nano-sensors? Write an essay on different types of nano-sensors.
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Write a notes on synthesis and application of Nanocrystalline Zno.
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Write a notes on synthesis and application of Nanocrystalline Tio2.
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Write a notes on Quantum dots.
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Write a notes on Carbon nanotubes.
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