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Amolakchand Mahavidyalaya, Yavatmal, Class – M.Sc. I (SEM – I), Organic Synthesis (Paper XI) Unit- II, Note – 1. Each question carries 1 M, 2. No negative marking., Time – 1h, , Total marks -15 M, , 1. Which of the following is not linear ortho-fused polynuclear hydrocarbon?, a) Napthacene, b) Anthracene, c) Phenanthrene, d) Napthalene, 2. How many benzene rings are fused in structure of Naphthacene ?, a) One, b) two, c) three, d) four, 3. Complete the following reaction…, Br, C2H5OOC, , +, , K, , ?, , a), b), c), d), 4. What is the name of following reaction ?, O, , CH3, , a), b), c), d), , Elbs reaction, Diel’s Alder reaction, Friedle Craft’s reaction, Fittig reaction, , 5. Electrophilic substitution in phenanthrene predominantly takes place at which, position?, a) 4, b) 8, c) 6, d) 9, 6. What is the product of following reaction?

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O, , O, , AlCl3, , +, , Zn dust, , A, , B, , PPA, O, O, , B, , A, , a), , O, O, , B, , A, , b), , O, O, , B, , A, , c), , OH, O, , A, , B, , d), 10. Complete the following reaction and name the reaction?, OH, , Br, , 2, , Na, [O], , ?, , Br, , a), , Friedle Craft, reaction, , Fittig reaction, , b), Fittig reaction, , c), Friedle craft, reaction, , d), 11. Anthracene on reduction gives 9, 10-dihydroanthracene, a) True, b) Flase, , 12. Arrange the following polycyclic hydrocarbon with their increasing carcinogenic, activity.A] Anthracene, a) A < C < B, b) B <A < C, c) C < A < B, d) A < B < C, , B] 2-methylanthracene, , C] 2,6-dimethylanthracene

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13. In IR Spectrum of anthracene C-H stretch is observed at ……cm-1 and in, phenanthrene it is observed at …… cm-1., a) 830, 900, b) 900, 830, c) 1000, 830, , d) 900, 1000, 14. Arrange the following compounds with their increasing order of λ max value?, A] Anthracene, , B] Phenanthrene, , C] Naphthacene, , a) A < B < C, b) C < A < B, c) B < A < C, d) A < C < B, 15. Bromination of anthracene gives which of following product ?, a) 2- bromoanthracene, b) 9- bromoanthracene, c) 10-bromoanthracene, d) 4-bromoanthracene, , ***