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Papers included in this bank - ASKnLearn

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How many moles of dilute NaOH are required to completely hydrolyse 1 mole ofM?A 3 B 4 C 5 D 6MHCI/PRELIM 2009/P1/Q3030 A student attempted to synthesize the follow<strong>in</strong>g compound N.NHCOCH 3NOCOCH 3Which of the follow<strong>in</strong>g pairs of reactants will give the target molecule?COClNH 2AOHand CH 3 NH 2C OHand CH 3 CO 2 HBNH 2and CH 3 COCl DNH 2OHCO 2 Hand CH 3 COClMI/PRELIM 2009/P1/Q23The compound CF 3 CHBrCl is a general anaesthetic called halothane. The number ofstructural isomers, <strong>in</strong>clud<strong>in</strong>g halothane, hav<strong>in</strong>g the molecular formula C 2 HBrClF 3 isA 2 B 3 C 4 D 5MI/PRELIM 2009/P1/Q24Which one of the follow<strong>in</strong>g sequences of nitration, alkylation and brom<strong>in</strong>ation is expectedto give the best yield for the synthesis of 2–bromo–4–nitromethylbenzene frombenzene?ABCDAlkylation, nitration, brom<strong>in</strong>ationAlkylation, brom<strong>in</strong>ation, nitrationNitration, alkylation, brom<strong>in</strong>ationNitration, brom<strong>in</strong>ation, alkylationMI/PRELIM 2009/P1/Q25The structure below shows the active <strong>in</strong>gredient of a certa<strong>in</strong> drug.© SAJC Chemistry Unit 2009 38

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