Assignment Questions, 20101 - Nalanda Open University

3- How a conductor, an insulator and a semiconductor are differentiated on the basis of bondtheory of metals ?Paper-VIAnswer Any Two Questions.(lHkh iz'u 10-10 vadska ds gSa)1- What are carbohydrates and how are they classified ? What are limitations of open-chainstructure of D(+) - glucose ? Discuss the evidences in support of the pyranose ring structureof D(+) - glucose.2- (a) What are proteins and how are they classified ? Discuss your acquaintances withprimary, secondary, tertiary and quaternary structure of protein.(b) Elaborate chemical and enzymatic hydrolysis of Nucleic acid.3- (a)What are nucleotides ? What is the role RNA and DNA in duplication and replication ?How will you show that the involved sugar moiety possesses pyranose structure ?(b) What is the role of DNA in the biosynthesis of Proteins ?Paper-VIIAnswer Any Two Questions.(lHkh iz'u 10-10 vadska ds gSa)1- Describe methods for preparation of acetylacetonate complex with a transition metal andnon-transition metal. Give the reaction mechanism for the formation of acetylacetonatemetal complex and explain its magnetic behaviour.2- (a) Write a mode on Marcus-Husch Theory. What are complimentary and noncomplimentaryelectron transfer reaction ?(b) Why certain electron transfer reactions proceed by inner sphere mechanism and someby outer sphere mechanism ?3- (a) Give a concise definition of the term "Supramolecular chemistry". Explain thedistinction between molecular and supramolecular interactions.(b) Describe the principles involved in the process of self assembly through metal ion coordinationwith examples.Paper-VIIIAnswer Any Two Questions.(lHkh iz'u 10-10 vadska ds gSa)1- What are phenanthrene alkaloids ? Give structural formulae of at least three alkaloids ofthis class. Summarise the degradative evidences which led to the elucidation of thestructure of phenanthrene alkaloid having molecular formula C17H19NO3 and used asanalgesic.2- Out-line the chemical evidence to elucidate each of the following in cholesterol :(a) Nature and position of the side chain. (b) Hydroxyl group at position 3and double bond at C5-C6; and (c) Angular CH3 groups at C10 and C13.3- What are porphyrins and their general properties ? Elaborate degradative & syntheticevidences for the elucidation of the structure of chlorophyll- a. Comment on the role ofchlorophyll-a as power for transmission of energy.M.A/M.Sc (Geography) Part-IIPaper-IXAnswer Any Two Questions.(lHkh iz'u 10-10 vadska ds gSa)1- xzkeh.k lsok dsUæksa dk vFkZ ,oa dk;ks± dk o.kZu dhft, ADescribe the meaning and function of Rural Service Centres.2- Hkkjr esa lkef;d cktkj ds izdkj ,oa dk;Z dk o.kZu dhft, ADescribe the type and function of Periodic Market in India.3- fuEu xaxk ds eSnku esa xzkeh.k cfLr;ksa ds izdkj ,oa izfr:i dk o.kZu dhft, ADescribe the type and pattern of rural settlement in the Lower Ganga Plain.