JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech IV Year CARBON NANO TUBES AND THEIR APPLICATIONS Previous Question Paper (November/December- 2018 - R15)
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 is the structure of Graphene?
Answer
Graphene is a single-atom-thick, two-dimensional allotrope of carbon arranged in a hexagonal honeycomb lattice structure, where each carbon atom is sp2 hybridized and covalently bonded to three neighbors.
What is the allotrope of Carbon?
Answer
An allotrope of carbon is a physical form of the element carbon in which the atoms are bonded in different structural arrangements. Common examples include diamond, graphite, fullerenes, carbon nanotubes, and graphene.
Write in brief on basal growth in CNTs.
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Write few synthesis procedures of Carbon Nanotubes.
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Write the importance of characterization procedure.
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What is the characterization techniques involved in CNTs?
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Define Metal Nano composite.
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Write few differences between Single walled and Multi walled CNTs.
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What is chemical sensor?
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Discuss the applications of CNT’s.
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Part B
Describe the discovery of Carbon Nanotubes in detail.
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Draw the structure of graphene. Write the properties.
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Write in detail about Carbon clusters.
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Write the differences between graphene and Carbon Nanotubes.
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Explain briefly about the synthesis of Carbon nanotubes by laser ablation method.
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What are the advantages and disadvantages of by laser ablation method?
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Differentiate between tip growth, basal growth of CNTs.
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Write in detail about Chemical Vapor Deposition synthesis of CNTs.
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Describe Transmission Electron Microscopy of Carbon nanotubes and discuss in detail.
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Write the differences between Raman spectroscopy and Transmission Electron Microscopy.
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What is the principle involved in Raman spectroscopy?
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What are the advantages and Disadvantages of Raman spectroscopy?
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Write short note on optical properties of Carbon nanotubes.
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What are the vibrational properties of Carbon Nanotubes.
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What are the modern day applications of Carbon Nanotubes in present world?
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Discuss the field emission properties of Carbon Nanotubes. Also explain the working of Flat panel displays based on Carbon Nanotubes.
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Describe the energy storage applications of carbon nanotubes in high performance lithium ion batteries.
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Write a note on Chemical sensing applications of Carbon Nanotubes.
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Write a note on fuel cell applications of Carbon Nanotubes.
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What is the difference between chemical sensor and glucose sensor?
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