49 The corect formula of the polymer obtained when n moles of HOH CCH OH reacts with n moles of HOOC-CH COOH is A CO-C,HCO.CH CH. O-12n 8. CO-CH,Co-0-CH CH O-Jn C. 1O-CH CH O-co-CH,Co-12n D. -CO-CH, OCO-CH CH, 0-in 57 Which of the above i on amide? 58. Which is a nitrile? 59. Which is an anhydride? 60. Which is an acid chloride? Questions 61-65 relate to the following names of some reactions that carboxylic acids and their derivatives undergo. Ethanoylation C. TYPE TWO QUESTIONS Alcoholysis Hydrolysis A. B. Questions 50 - 70 DIRECTIONS: Each group of questions below consists of four lettered headings followed by a list of numbered questions. For each numbered question, select the one heading which is most closely related to it Each 61. CH- heading may be used once, more than once Ammonolysis Select from (A D) the best name for the following reactions: CH, +NH, or not at all. 62. CH, - + ROH CH, -C-0-R+ HOCI Questions 50 - 53 The list of reagents below are used in organic chemistry A) LIAIH, C) Mno Choose from the letters A-D the correct reagent 64. R required for the following reactions. 50. RCO H 51. RCO,H 52 RCH,OH -RCOH 53. RCH COOH RCHCICOOH 63 R. + NH R-C-NH + HCI B) PCI, D) CI +H,OH R OR +ROH RCOCI RCH OH 65 CH + 20 H,NH. CH * CH,NH,C NHC H. CH.CO, H+CH,CH,OH CH,CO.CH,C,H, Quesions 66 -70 The reagents and conditions given below can be used to charactensed carbaxylic acids and thei derivalives. Use only the letters A- D to answe the questions that follow. A Neutral iron () chloride B ROH 2C HCHO CHCH,OH +C,H,CO. Na Questions 54 - 56 concem the reaction scheme above 54. Which of the steps is a disproportionation? 55 Which step in an esterification reaction? C PO heat D. NaOH Bi, 66. Which of them can be used to prepa nitriles from amides? 67 Which reacts wilth benzene carboxylic a 56. Which step is undergoing alkali hydrolysis? Questions 57-60 refers to the following acid derivatives to give a sweet fruity odour? 68. Which reacts with an acid derivatives cause a reduction in the number of carb atoms? 69. Which will give a blood red coloration adding to a cold neutral solution ethanoate? B)R -C-CI A) R-C 70 Which will give a yellow coloration CH CH(OH)COON2? C) R-C- NH D) R-CN 357