Bachelor of Science (B.Sc.) Sem VI 2014 2015 2015 Chemistry 3 Question Paper - Mumbai University | munotes

Questions asked in this paper

1. Q1 Answer any three of the following : Draw a labelled molecular orbital energy level diagram for 5 Comment on its magnetic property Explain crystal field spliting in octahedral 5 the term symbol for ground state of carbon 5 Write a short note on ‘Electron spin as an 5 : for covalent bonding in coordination compounds the effect of the following on the Value of 10dq. 5
   • (i) geometry of the complex
   • (ii) nature of ligands
2. Q2 Answer any three of the following : 3 marks
   • (2) What are hydrolysis reactions ?
   • (ii) Explain in brief the involved in anation reactions
   • (b) What is lability of a cozapiex ? Give the relationship between the 5 lability of a complex and the electronic configuration of the metal
   • (c) Justify the following : 5 @ is less stable than
   • (ii) Ca’ forms stable complexes with 'EDTA’
   • (d) Explain.the potentiometric method of determination of stability 5
   • (e) account of : 5 Name the different types of electronic transitions. 5
   • Q.P. Code: 14589 Answer any three of the following :
   • (a) What are organometallic compounds ? 5 organometallics of main group elements, discuss the following
   • (b) Discuss the following chemical reactions of 5 compounds of main group elements
   • (i) Alkylation and arylation
   • (c) Explain the metallation reactions with reference to * 5
   • (i) Organometallics of main group elements
   • (ii) ferrocene
   • (d) With reference to ferrocene discuss the following : 5
   • (i) one method of preparation Discuss the structure and bonding involved in ferrocene 5
   • (f) What are metal clusters ? Discuss the structure of
3. Q4 Answer any three of the following :
   • (a) Discuss the structure involved in borazine 5
   • (b) Explain in brief the principles involved in the aerobic and anaerobic 5 Explain briefly terms - BOD and COD 5
   • (d) What are ? Discuss the two dimensional nanoparticles 5 the synthesis of nanomaterials by sol-gel method 5 vi on the following with respect to pharmacy. 5
   • Q.P. Code: 14589 Write the most appropriat (Answer any fifteen) : priate answer from those given for the following
4. Q1 The numb
   • (1) er of
   • (2) CFSE for configuration in th e case of high spin octahedral complex
   • (3) The state term for configuration is
   • (4) is known as spin multiplicity
   • (5) The terms are same for d* configuration
   • (6) Splitting of d-orbitals is maximum in ______ Complexes
   • (7) mechanism seen in complexes with ligands having
   • (8) The reactions in which exchange of ligands takes place in complexes are called as
   • (9) among the metal ion hydroxo complexes is the
   • (10) Higher the value.cf the stability constant __—— will be the stability of the complex
   • (a) (b) lesser (c) no change
   • (11) of the electronic absorption bands occurs due to the changes in ——— of electrons
   • (c) both Spectrum of a coloured solution is recorded using
   • (a) spectrophotometer
   • (b) flame photometer
   • (c) Conductometer
   • Q.P. Code: 14589
   • (13) In the formation of the dxy atoms overlap to form bonds. 5
   • (a) o (b) tom is between
   • (14) The organometallic compounds in which a metal ato two planar _____ ligands are called metallocenes
   • (15) The Cp rings in ferrocene are and therefore undergo most of the reactions of benzene
   • (16) The regular nitrocompounds of ferrocene are not formed, because
   • (17) The alkyls of first three main group elements feadily react with reagents and undergo hydrolysis
   • (18) Carbanion-halide exchange reactions of synthesis of organometallics of main group elements are also as
   • (a) geothesis (b) metathesis
   • (19) Removal of suspended solids waste water stream is called
   • (20) The agglomeration of small particles into larger units to speed up the settling process is called
   • (21) Oxygen demanding waste in water leads to in dissolved
   • (22) Chlorination is done for the removal
   • a) s de i macromolecules which do not have in their backbone as inorganic polymers
5. Q4 (b) hydrogen
   • (24) The polymers that hav atoms of only one element in thei

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