SOLVED

51) Which two simple functional groups make carboxyl group? A) Aldehyde and keto groups B) Aldehyde and hydroxyl groups C) Keto and hydroxyl groups D) Ester and hydroxyl groups E) Ester and ether groups 52) Which class of compounds is most oxidized? A) alkanes B) alcohols C) acids D) aldehydes E) ketones 53) What are heterocyclic compounds? A) They are cyclic compounds in which carbon has one or more substituents that are neither hydrogen or another carbon atom B) They are cyclic compounds in which two or more carbon rings are connected with C-C bons (for example biphenyl) C) They are cyclic compounds in which carbon ring is connected to another ring not containing carbon atoms D) They are cyclic compounds in which one or more atoms are not carbon atoms E) They are cyclic compounds that can have more than one stable conformation 54) Which of the following synthetic procedures are plausible? I) synthesis of esters from alcohols and acids II) synthesis of ethers from acids and alcohols III) synthesis of amides from acids and amines IV) synthesis of alcohols from alkanes and water V) synthesis of aldehydes from alcohols and oxidizing agents A) I), III), and IV) B) I), III), and V) C) II), III), and V) D) II), III), and IV) E) III), IV), and V) 55) Compound A easily reacts with water to give compound B. Compound B on the other hand can be oxidized to produce compound C. Both B and C can be further oxidized to produce D. To which classes of organic compounds A, B, C and D most likely belong? A) A is an alkane, B is an alcohol, C is an aldehyde and D is a carboxylic acid B) A is an alkene, B is an ether, C is an aldehyde and D is a carboxylic acid C) A is an alkene, B is an alcohol, C is a ketone and D is a carboxylic acid D) A is an alkene, B is an alcohol, C is an aldehyde and D is an ester E) A is an alkene, B is an alcohol, C is an aldehyde and D is a carboxylic acid 56) Calculate the degree of unsaturation for the following molecules: Molecule I: C3H4 Molecule II: C5H10 Molecule III: C4H6 A) For molecule I the degree of unsaturation is 2, for molecule II the degree of unsaturation is 1 and for molecule III the degree of unsaturation is 1. B) For molecule I the degree of unsaturation is 2, for molecule II the degree of unsaturation is 0 and for molecule III the degree of unsaturation is 2. C) For molecule I the degree of unsaturation is 2, for molecule II the degree of unsaturation is 1 and for molecule III the degree of unsaturation is 2. D) For molecule I the degree of unsaturation is 2, for molecule II the degree of unsaturation is 2 and for molecule III the degree of unsaturation is 2. E) For molecule I the degree of unsaturation is 2, for molecule II the degree of unsaturation is 1 and for molecule III the degree of unsaturation is 1. 57) What is the degree of unsaturation for the following compounds? A) For A the degree of unsaturation is 1, for B is 6 and for C is 5. B) For A the degree of unsaturation is 1, for B is 5 and for C is 6. C) For A the degree of unsaturation is 0, for B is 6 and for C is 5. D) For A the degree of unsaturation is 1, for B is 6 and for C is 4. E) For A the degree of unsaturation is 1, for B is 4 and for C is 5. 58) How many skeletal isomers for C6H14 can be drawn? A) 6 B) 3 C) 8 D) 5 E) 2 59) Name the functional groups in the molecule below: A) ester, ether, amine, keto B) carboxyl, ether, amine, keto C) ester, ether, amine, aldehyde D) ester, ether, amide, aldehyde E) ester, carboxyl, amine, keto 60) What is the IUPAC name for the following molecule? A) 2-bromo-4-isopropyl-3-methylbutane B) 2-bromo-3,5-dimethylhexane C) 3,5-dimethyl-2-bromohexane D) 2-bromo-3-methyl-4-propylbutane E) 2-bromo-5,5,3-trimethylpentane