Chemistry organic pt3

1. Which compound decolorizes bromine in CH Cl3?. benzene. cyclohexane. hexane. 1-hexene.

2. Which is an example of an aromatic compound?. acetylene. benzene. polyethylene. propanone.

3. Which molecule contains one s- and two p-bonds?. C2H2. C2H4. C2H6. C3H4.

4. How many isomers exist for dibromobenzene (C6H4Br2)?. one. two. three. four.

5. What is the position of the bromine atom relative to the methyl group in 2- bromotoluene?. meta. ortho. para. trans.

6. What is the correct name for CCI4?. tetrachlorornethane. carbon chloride. carbon(IV) chloride. carbon chlorate.

7. Which of the following reagent can be used to distinguish phenol from benzyl alcohol?. NaOH. NaHCO3. Br2/CCl4. FeCl3.

8. How many isomers are possible for an aromatic compound having molecular formula C7H8O?. 3. 4. 5. 6.

9. The best reagent for preparing an alkyl chloride from an alcohol is: SOCl2. HCI. PCl5. PCI3.

10. Salicylic acid is stronger than benzoic acid because: has an aromatic structure. an intramolecular hydrogen bond is formed between the two functional groups. contains a hydroxyl group. forms stronger hydrogen bonds with water molecules than the benzoic e acid.

11. Phenols are more acidic than alcohols because: the phenoxide ion is stabilized by resonance. the phenols are more soluble in polar solvents. the phenoxide ion do not exhibit resonance. the alcohols do not lose proton.

12. Electrophilic substitution in phenol generally occurs at: o- and p-positions. m-position. only at o-position. only at p-position.

13. The strongest acid among the following aromatic compounds is: ortho-nitrophenol. para-chlorophenol. para-nitrophenol. meta-nitrophenol.

14. Phenol gives ........... color with neutral FeCl3 solution: violet. green. red. blue.

15. What is the expected product formed from the reaction between 2-butene and Cl2?. 2,3-dichlorobutane. 2-chlorobutene. 2,2,3,3-tetrachlorobutane. 2,2-dichlorobutene.

16. C-CI bond is least polar in: chloroethene. 1-chloropropane. 2-chloropropane. 3-chloro-1-propene.

17. Which of the following compounds is least reactive in nucleophilic substitution reaction?. CH2-CH CI. CH3 CH2 CI. CH2=CH CH2 CI. (CH3)3C-Cl.

18. A mixture of ethyl iodide and n-propyl iodide is subjected to Wurtz reaction. 'Which of the following compounds is NOT formed during the reaction: butane. propane. pentane. hexane.

19. Which of the following alkyl halides interacts most easily with water?. C2 H5 CI. C2 H5 Br. C2 H5 F. C2 H5 I.

20. What is the common name for CH2=CH CH2 Cl: propylidene chloride. vinyl chloride. allyl chloride. vinyllene chloride.

21. The presented reaction is: CH2=CH-CH3 + HBr -►► CH3-CH-CH3 | Br. nucleophilic addition. electrophilic addition. electrophilic substitution. free radical addition.

22. Which of the following reagent CANNOT be used for preparing alkyl chlorides from alcohols?. HCI + anhyd. ZnCl2. NaCI. PCl5. SOCl2.

23. The C-X bond is strongest in: CH3 CI. CH3 Br. CH3 F. CH3 l.

24. Which of the statements concerning styrene is NOT correct: styrene is a monocyclic arene. is a compound which easily interacts with bromine water and diluted potassium permanganate solution. arene with condensed aromatic ring. easy polymerizes.

25. The reactivity of alkyl halides decreases in the following order: Rl > RBr > RCl > RF. RF > RCI > RBr > RI. RBr > RCI> RI > RF. RCI > RBr > RI > RF.

26. For which of the listed compounds is possible to interact with solution of silver nitrate?. chloroethane. 1,2-dichloroethane. potassium bromide. for all presented chemical compounds.

27. The main product of the presented reaction is: chloroethanol. ethane. propanol. ethanol.

28. The cellulose and starch differ by: the number of the glucose residues. the type of the glucose residues. the type of the chain. all answers are correct.

29. The energy of C-X chemical bonds grows in tbe following order: C-I < C-Br < C-Cl < C-F. C-F < C-Cl < C-Br < C-I. C-F < C-I < C-Br < C-Cl. C-Cl < C-Br < C-I < C-F.

30. In alkanes, the hydrogen atoms most easily replaced by a halogen are the ones, bounded to a: primary carbon atom. secondary carbon atom. tertiary carbon atom. quaternary carbon atom.

31. Which of the reactions correctly represents the conditions for obtaining of the reactions bromobenzene?. H+ C6H6 + Br2 ->. UV C6H6 + Br2 ->. t°,Ni C6H6 + Br2 ->. FeBr3 C6H6 + Br2 ->.

32. Which of the listed compounds is a homologue of ethanal?. methanal. acetone. propanone. acetaldehyde.

33. The reaction of 2-bromopropane with an aqueous solution of potassium hydroxide gives: 2-propanol. propene. 1,2-propandiol. sodium propylate.

34. Indicate the missing reagents in the scheme: A- H2 SO4 / HNO3 ; B - NH3 / Cu+. A - Na NO2 / HCl; B - NH3 / Na NH2. A- H2 SO4 / HNO3; B - NH4CI. A- H2 SO4 / HNO3; B - NH3.

35. What is the type of the reaction, presented on the scheme: chain-radical substitution. addiction. substitution. elimination.

36. How many isomers correspond to a halogen derivative with the general formula C4HsCh?. three. four. five. eight.

37. In which of the presented compounds the carbon-bromine bond is most polar?. H3C - Br. Br - CH = CH2. H-C (=) C-Br. Br - CH = C = CH2.

38. Indicate the wrong statement: the tetrachloromethane is good organic solvent. the tetrachloromethane dissolves in water. the tetrachloromethane in contact with flame forms a toxic substance. the tetrachloromethane burns.

39. Which of these compounds contain an asymmetric (chiral) carbon atom?. 1-chloropropane. 2-methyl-2-chlorobutane. 3-chloropropane. 2-bromobutane.

40. Which of the listed compounds is Freon - 12?. CHI3. C6 H6 Cl6. CF2=CF2. CF2 Cl2.

41. Which of the listed compounds decolorizes bromine water?. CH3 - CH(CH3) - CH2 - CH2 CI. C6 H5 Cl. CH3 CH = CH2 CI. C6 H6.

42. The hydrolysis of 4-chlorobenzyl chloride with a concentrated solution of sodium hydroxide results in: p-chlorophenol. p-hydroxybenzylchloride. p-chlorobenzyl alcohol. p-hydroxybenzyl alcohol.

43. The interaction of 4-chlorobenzyl chloride with solution of ammonia results in: 4-aminobenzylchloride. 4-chlorobenzylamine. 4-aminobenzylamine. phanylaminomethane.

44. Which of the presented compounds are phenols?. only A. A, D and C. B, D and E. all.

45. Which of the listed hydroxyl derivatives changes the litmus colour in red?. glycerol. glycol. 1,3-propanediol. none of the compounds.

46. The polyvalent alcohols are identified with: freshly precipitated copper (II) hydroxide. ferry chloride solution. bramine water. solution of silver oxide in ammonia.

47. The reactions by which m-nitrophenol can be produced from benzene are: sulfonation, nitration, reaction with sodium hydroxide, alkali melting. sulfonation, alkali melting, nitration, hydrolysis. nitration, sulfonation, hydrolysis. halogenation, hydrolysis, nitration.

48. Which is the compound C4H10 O, which forms a ketone and interacts with potassium: butanal. 2-butene. 1-butanol. 2-butanol.

49. The fact that phenol is weaker acid than carbonic acid is proven by interaction of: phenol with carbonic acid. sodium phenolate and carbonic acid. sodium phenolate and hydrochloric acid. phenol and potassium hydroxide.

50. The mild oxidation of which alcohol does NOT give a carbonyl compound?. 2,3-dimethyl-1-pentanol. 3-methyl-2-pentanol. 2,3-dimethyl-3-pentanol. 3-methyl-1-pentanol.

51. Which of the presented compounds express highest acidic properties?. A. B. C. D.

The final product of brominatiol of phenol is. A. B. C. D.

53. Which of the presented pairs are metamers?. CH3 CH (OH) CH2 CH3 and CH3 CH2 O CH2 CH3. CH3 CH (OH) CH3 and CH3 CH2 CH2 OH. CH3 CH2 O CH3 and CH3 CH2 CH2 O CH3. CH3 O CH2 CH2 CH3 and CH3 CH2 O CH2 CH3.

54. The oxidation of a secondary alcohol gives: aldehyde. carboxylic acid. ketone. ester.

55. The most difficult is the esterification of: A. B. C. D.

56. The reaction of 1,2-diiodopropane and aqueous solution of potassium hydroxide results in: ethanol. 2-propanol. 1,2-propandiol. glycerol.

57. Which of the isomerie hydrocarbons C6 H12 adds water with sulphuric acid as catalyst, which results in only one alcohol: 2-bexene and cyclohexane. 3-hexene and 2,3-dimethyl-1-butene. 3-hexene and 2,3-dimethyl-2-butene. 2,3-dimethyl-2-butene and 2-methyl-2-pentene.

58. How a solution containing benzene, naphthalene, phenol and aniline can be separated: the phenol and aniline are separated with sodium hydroxide solution, and benzene and naphthalene - with hydrochloric acid. the phenol and aniline are separated with nitric acid, and benzene and naphthalene - with sulphuric acid. the phenol is extracted after treatment with sodium hydroxide, the aniline is extracted after treatment with hydrochloric acid, and benzene and naphthalene - through distillation. the phenol and aniline are separated through distillation, and benzene and naphthalene - by nitration with nitrating mixture.

59. Which of the chemical names is wrong?. CH2 = CH - CH2 OH - propenol. H O CH2 CH2 OH - 1,2-ethandiol. CH3 CH2 CH(OH) CH3 - 3-butanol. C6 H5 CH2 OH - phenylmethanol.

60. Three tubes contain solutions of 1-butene, ethanal and benzene. The reagent used for unique identification of ethanal is: solution of Ag2O in ammonia. alcoholic solution of KOH. solution of FeCl3. can not be distinguished by just one reagent.

61.The chemical structure of the molecule shows: the spatial arrangement of the atoms in the molecule and the chemical bonds between them. the geometry of the molecule and its physical properties. the physical properties of the substance. the sequence of attachment of the atoms therein, their position relative to one another and the chemical bonds between them.

62. The substitution reactions in alkanes are best carried out at: presence of simple bonds. primary C-atom. the most substituted C-atom. methane.

63. In which of the presented compounds there is a chemical bond formed by overlap of a sp2 hybrid orbitai and a sp hybrid orbital. H2 C = CH - CH = CH2. H2 C = CH2. H2 C = CH - CH3. H2 C = C = CH2.

64. What type of isomerism is possible for the compound CH3 CH2 O CH2 CH3 ?. only positional. chain and positional. chain, functional and metameric. only chain and metamerie.

65. Which halogen notably does NOT react with methane by the chain-linking mechanism?. bromine. iodine. chlorine. all halogens interact easy with methane.

66. For monosaccharaides is characteristic: positional isomerism. chain isomerism. optical isomerism. geometrical isomerism.

67. Starch interacts with: potassium permanganate;. potassium bichromate;. iodine tincture;. ethanol.

68. 2-butyn may be obtained in one step using: 1-chlorobutan and aqueous solution of sodium hydroxide. 1-chlorobutan and alcohol solution of potassium hydroxide. 1-chlorobutan and sodium. sodium propynilide and iodomethane.

69. Hexane may be obtained in highest yield by Wurtz method from: chloromethane. 1-chloropropane. 2-methyl-1-bromopropane. 2-bromopropane.

70. At temperature below 140°C in the presence of concentrated H2 S04 from 1-propanol is released water and is obtained: CH2 = CH CH3. C3 H7 - O - C3 H7. CH3 OH CH2=CH2. CH (=) C - CH3.

71. Gradual hydrogenation of alkines to alkenes is possible using: nickel. platinum. nickel and palladium. palladium with lead acetale.

72. The capability of alcohols to form intermolecular hydrogen bonds is a reason for: decreased boiling point. limited water solubility. lower vapor pressure. higher freezing temperature.

73. Ketones do NOT interact with: hydrogen. sodium hydrogensulphite. hydrogen cyanide. ammonia.

74. Cellulose does NOT interact with: solution of stannous dichloride in hydrochloride acid. solution of zinc dichloride in hydrochloride acid. Schwaizer's reagent. ethanolic solution of iodine.

75. The amino acids do NOT interact with: alcohols. alkaline hydroxides. active metals. sales.

76. The esters: exhibit acidic properties. are neutral. exhibit basic properties. are amphoteric compounds.

77. Which of the following compounds give violet color with ferric chloride solution: A. 2-propanol B. 1,2-ethanediol C. phenol D. salicylic acid. A and B. A and C. B and C. C and D.

78. Propanoic acid and 3-hydroxypropanal have empiric formula C3 H6 O2. They are: chain isomers. functional isomers. positional isomers. geometric isomers.

79. Which of the following compounds is product of interaction between glucose and Fehling reagent: CH2 OH (CHOH)4 CHO. HOOC (CHOH)4 COOH. HOOC (CHOH)4 CHO. CH2 OH (CHOH)4 COOH.

80. Benzene may be obtained synthetically through: interaction of three molecules of ethene. interaction of ethane and ethanol. cyclic trimerization of ethyne. interaction of ethane and ethene.

81. In which of the listed compounds a geometric isomerism is possible: 2-methyl-2-pentene. 2,3-dimethyl-2-butene. 3-hexene. 1-hexene.

82. The product of oxidation of 3-pentanone is: only formic acid. only acetic acid. acetic and butyric acid. propanoic and ethanoic acid.

83. Which of the following compounds is the product of Wurtz synthesis of 2- bromopropane: hexane. 2,3-dimethylbutane. 2,2-dimethylbutane. 2-methylpentane.

84. The product of complete bromination of phenol is: 2-bromophenol. 4-bromophenol. 3-bromophenol. 2,4,6-tribromophenol.

85. Which of the following alcohols can NOT be dehydrated to alkene: 1-butanol. 2-butanol. methanol. 3,3-dimethyl-2-butanol.

86. Which of the following compounds is product of interaction of methanol and ethanol in presence of concentrated sulphuric acid and heating at temperature below 140°C: ethene and propene. diethyl ether. dimethyl ether. diethyl ether and dimethyl ether.

87. Which interaction proves that the carbonic acid is stronger acid than the phenol?. phenol and carbonic acid. phenol and sodium hydroxide. sodium phenolate and carbonic acid. phenol and nitric acid.

88. Which alcohol, when oxidized, does NOT yield a carbonyl compound: 2,3-dimethyl-1-butanol. 2,3-dimethyl-2-butanol. 2-methyl-1-butanol. 3-methyl-2-butanol.

89. Which of the following compounds contains an aldehyde group: glucose. methanoic acid. methanal. all listed compounds.

90. Which of the listed hydrocarbons is a weak acid: ethane. ethyn. ethene. 2-butyn.

91. Choose the suitable interactions/processes in order to distinguish acetic and hydrochloric acid: interaction with active metal. interaction with alkali oxide. interaction with alkali hydroxide. burning.

92. At which of the following isomers of pentene a cis-trans isomerism is feasible: 3-methyl-1-butene. 1-pentene. 2-methyl-1-butene. 2-pentene.

93. Which statement concerning benzene, hexane and hexene is true: addition reactions are typical. substitution reactions are typical. contain delocalized chemical bonds in their structures. all three compounds are liquids.

94. The product of burning of ethene is: 1,2-ethanediol. acetic acid. water and carbon monoxide. water and carbon dioxide.

95. Benzene is: a toxic gas. a colorless, mobile liquid. a water soluble gas. a water soluble liquid.

96. Which of the listed compounds is NOT monosaccharide?. fructose. glucose. ribose. saccharose.

97. The compound with general formula C2 H2 is: ethane. ethyne. ethene. ethanal.

98. A characteristic reaction for methane is: chlorination in the presence of light. addition of bromine water. oxidation with potassium permanganate solution. polymerization.

99. The product of interaction between methylpropene and HBr is: 1-bromo-2-methylpropane. 2-bromo-2-methylpropane. 2-bromo-1-methylpropane. 1-bromo-2-methylpropene.

100. Choose the product of addition of water to 1-butene: 1-butanol. 1,2-butanediol. 2-butanol. 2-butenol.