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) Question No. 1 is compulsory. Attempt any four questions out of remaining six questions. ties f any four :— 20 {a) Explain the term Effective Atomic Number with suitable examples. {b) How do you distinguish between phenol and alcohol ted 1 ({c) Explain Wagner-Meerwin rearrangement : (d) Give two methods for the preparation of phthalic acid mes (e)} Write IUPAC names of the following co-ordination compounds omy (i) Ky[ A] (C,0,)5) (li) (Cr ely (NH) ] ition Write chemical formula of the following compounds. ffect (i) Aluminium potassium sulphate-12-water it as (ii) Pentamine chloro chromium (II!) bromide. st we ) What are lanthanides and actinides ? Explain their properties with reference to 10 ively. (i) Electronic configuration {ii) Colour and spectra. ered ) Explain magnetic behaviour of { Co (NH,), ]*5 and § Co F, 4%. § } Write note on Wer- ners co-ordination theory. 5 What is CFSE ? Calculate CFSE for d'd® and d® in octahedral complexes. 10 ndard Explain preparation properties and structure of N,O,. 5 rs per What are the drawbacks of CFT ? 3 5 using 4,000 rite notes on (any four) :— . 20 ndard | (a) Cis-trans-isomerism in [ CoCl, (NH,), ]* 38.5% | « Preparation, properties and uses of X, F,. ~ (c} Structures of SF, and PCI, on the basis of VSEPR saving (d) Polymers of Boron (2) Magnetic behaviours of [Fe (CN), }-4 and{ Fe t (CN), ]}-? anded oretical Give any two methods for the preparation of Benzylalcohol. 5 eam is Explain following reactions with their mechanism and applications. (any three) :— 15 erator. | (i) Hoffmann Elimination {ii) Dickmann Condensation (iii) Cannizarro-reaction {iv) Aldol - condensation. Give any two methods of preparation of : 10 {i) Picnic acid system (i) Benzophenone. Explain formation and structure of free radicals. 5 How phenol is converted into : 5 (i) Ortho and Parabromophenol yase the (ii), Cyclohexanol. Complete following reaction and predict suitable mechanism. 10 Energy. 5: Mg/H,0 (i) 2CH,COCH, §=——2_, 7 Ti KOH ii) C,H, —C — C — C,H ) OyHy os SHH Distinguish between singlet carbene and triplet carbene. 5 Give manufacturing methods for oxalic acid and benzoic acid. 5 
