Chem 1002 Ch 9

29) Which of the following alkanes will have the lowest boiling point? A) CH4 B) C6H14 C) C16H34 D) C19H40

A) CH4

74) Excessive ingestion of ethanol over a long period may cause which of the following? A) physiological addiction B) memory loss C) deterioration of the liver D) all of the above

D) all of the above

32) All of the following are properties of hydrocarbons EXCEPT A) they have a higher density than water. B) their boiling points increase as the number of carbons increases. C) they burn readily. D) they are good solvents for nonpolar substances.

A) they have a higher density than water.

6) The first recorded synthesis of an organic compound in a scientific laboratory was by A) Isaac Newton in 1665. B) Benjamin Franklin in 1788. C) Friedrich W hler in 1828. D) Thomas Edison in 1888.

C) Friedrich W hler in 1828.

23) The formula for butane is A) C4H10. B) C5H12. C) C6H14. D) C4H8.

A) C4H10.

50) Which of the following is an alkyne? A) propene B) propyne C) propane D) xylene

B) propyne

59) The compound with the formula, CHCl3, was used as an anesthetic in earlier times, but has been found to have some serious side effects. The compound is called A) methyl chloride. B) methylene chloride. C) chloroform. D) carbon tetrachloride.

A) methyl chloride.

49) Which of the following is an alkene? A) propene B) propyne C) propane D) xylene

A) propene

14) A compound containing only carbon and hydrogen and which has only single bonds between atoms is classified as an A) alkane. B) alkene. C) aromatic compound. D) alkyne.

A) alkane.

68) Alcohols are characterized by which functional group? A) hydroxyl B) carboxyl C) halide D) ester

A) hydroxyl

25) An emollient is a A) skin softener. B) sun screen. C) laxative. D) detergent.

A) skin softener.

46) Which of the following compounds is saturated? A) butene B) butane C) propyne D) butadiene

B) butane

24) The formula for cyclopropane is A) C3H8. B) C7H16. C) C3H6. D) C7H12.

C) C3H6.

53) The formula of benzene is A) C2H2. B) C4H4. C) C6H6. D) C6H12.

C) C6H6.

38) Which of the following compounds is a homolog of CH2=CH2? A) CH3CH3 B) CH3CH2CH3 C) CH3CH=CH2 D) CH3CCH

C) CH3CH=CH2

36) What is the general formula for a cycloalkane? A) CnHn B) CnH2n+2 C) CnH2n-2 D) CnH2n

D) CnH2n

52) Which of the following is an aromatic compound? A) propene B) propyne C) propane D) xylene

D) xylene

92) The compound below is a(n) O || CH3Ch2CCH3 A) alcohol. B) aldehyde. C) carboxylic acid. D) ketone.

D) ketone.

44) The formula for propyne is A) C3H6. B) C3H4. C) C3H8. D) C3H3.

B) C3H4.

5) The first organic compound to be synthesized in a chemist's laboratory was A) cholesterol. B) chlorophyll. C) urea. D) benzene.

C) urea.

88) Diethyl ether is the most important of the ethers. It is an example of an ether with the general structure A) ROR. B) ROH. C) ROR'. D) R'OH.

A) ROR.

4) An organic compound is best defined as A) a compound containing carbon. B) a compound of carbon and hydrogen. C) a compound produced by a living organism. D) a compound that is NOT produced in a laboratory.

A) a compound containing carbon.

86) Phenol, sometimes called carbolic acid, was the first A) anesthetic. B) antiseptic. C) insecticide. D) analgesic.

B) antiseptic.

7) The element whose atoms have a unique ability to bond to each other and to other kinds of atoms is ________. A) sodium B) carbon C) sulfur D) nitrogen

B) carbon

87) Methyl tert-butyl ether (MTBE, CH3OC(CH3)3) has been used as a gasoline additive. MTBE is an example of an ether with the general structure A) ROR. B) ROH. C) ROR'. D) R'OH.

C) ROR'.

21) Compounds with the same number and kinds of atoms but with different structures are known as A) homologs. B) isotopes. C) isomers. D) allotropes.

C) isomers.

10) The simplest alkane is A) monane. B) ethane. C) methane. D) propane.

C) methane.

66) In representing the general formula of various functional groups, the symbol R stands for A) a halogen atom. B) a ring. C) an aromatic group. D) an alkyl group.

D) an alkyl group.

3) The most unique property of carbon is its ability to A) form four bonds. B) bond to oxygen. C) bond to nitrogen. D) bond to carbon.

D) bond to carbon.

99) The functional group of the organic acids is the A) hydroxyl group. B) amine group. C) carbonyl group. D) carboxyl group.

D) carboxyl group.

8) Carbon is almost always A) monovalent. B) divalent. C) trivalent. D) tetravalent.

D) tetravalent.

70) When wood is heated in the absence of air, the wood is destructively distilled and condensed to a liquid mixture. The primary component of this mixture is A) methanol. B) ethanol. C) rubbing alcohol. D) gasoline.

A) methanol.

2) Approximately what percentage of known compounds are classified as organic compounds? A) ≈ 95% B) ≈ 70% C) ≈ 40% D) ≈ 20%

A) ≈ 95%

76) What is the percent alcohol by volume in a beverage that is 36 proof? A) 3.6% B) 18% C) 36% D) 72%

B) 18%

17) How many different structural isomers are there for a hydrocarbon with the formula C4H10 ? A) 1 B) 2 C) 3 D) 4

B) 2

72) A bottle of an alcoholic beverage is labelled as "60 proof." The percentage of ethanol by volume in this alcoholic beverage is A) 15%. B) 30%. C) 60%. D) 20%.

B) 30%.

84) Phenols are often used as A) anesthetics. B) disinfectants. C) fragrances. D) insecticides.

B) disinfectants.

73) A bottle contains 5% ethanol. What is the proof of alcohol in this bottle? A) 2.5 B) 5 C) 10 D) 1.7

C) 10

18) How many different structural isomers are there for a hydrocarbon with the formula C5H12? A) 1 B) 2 C) 3 D) 4

C) 3

27) Which of the following is NOT a property of alkanes? A) Alkanes are not soluble in water. B) Alkanes have a lower density than water does. C) Alkanes will undergo addition reactions. D) Alkanes will burn easily and can be used as fuels.

C) Alkanes will undergo addition reactions.

12) What is the name of the compound with a formula CH3CH2CH3? A) methane B) ethane C) propane D) butane

C) propane

51) Which of the following is an alkane? A) propene B) propyne C) propane D) xylene

C) propane

81) Glycerol is an alcohol with ________ hydroxyl groups A) one B) two C) three D) four

C) three

19) How many different structural isomers are there for a hydrocarbon with the formula C6H14? A) 1 B) 2 C) 3 D) > 4

D) > 4

28) Which of the following alkanes will have the highest boiling point? A) CH4 B) C6H14 C) C16H34 D) C19H40

D) C19H40

40) Acetylene is A) CH4. B) C2H6. C) C2H4. D) C2H2.

D) C2H2.

69) The formula of methanol is A) COH. B) CHOH. C) CH2OH. D) CH3OH.

D) CH3OH.

45) The hydrocarbon that is used in torches along with oxygen to produce very hot flames for cutting and welding is A) ethylene. B) methane. C) propane. D) acetylene.

D) acetylene.

41) Acetylene is an A) alkane. B) alkene. C) alkyne. D) aromatic compound.

D) aromatic compound.

61) In general, CFCs are A) solids with high melting points. B) solids with low melting points. C) liquids with high boiling points. D) gases or liquids with low boiling points.

D) gases or liquids with low boiling points.

85) A phenol has a(n) ________ group attached to a benzene ring. A) amino B) carbonyl C) carboxyl D) hydroxyl

D) hydroxyl

13) A compound containing only carbon and hydrogen and which has only single bonds between atoms is classified as an A) alkane. B) alkene. C) alkyne. D) aromatic.

A) alkane.

33) The chemical formula of cyclopropane is A) C3H3. B) C3H6. C) C3H7. D) C3H8.

B) C3H6.

47) A molecular formula of an alkene is A) C7H16. B) C9H18. C) C5H8. D) C6H6.

B) C9H18.

82) All of the following contain more than one hydroxyl group EXCEPT A) ethylene glycol. B) glycerol. C) methanol. D) propylene glycol.

C) methanol.

43) A cyclic hydrocarbon containing seven carbon atoms and two double bonds will have the formula A) C7H16. B) C7H14. C) C7H12. D) C7H10.

D) C7H10.

22) The condensed structural formula for the molecule below is CH3 | CH3CH2CH | CH3 A) CH3CH2C(CH3)2CH3 B) CH3CH2CH(CH3)2 C) CH3CH2CH2CH2CH2CH3

B) CH3CH2CH(CH3)2

77) Which substance causes fetal alcohol syndrome? A) CH3OH B) CH3CH2OH C) CH3CHOHCH3 D) CH3OCH3

B) CH3CH2OH

55) The correct structure for benzene was proposed by ________ in 1865. A) Boyle B) Kekule C) Faraday D) Curie

B) Kekule

96) The compound below is commonly known as O || CH3--C--H A) acetone. B) acetaldehyde. C) benzaldehyde. D) formaldehyde.

B) acetaldehyde.

91) The compound below is a(n) O || CH3Ch2C-H A) carboxylic acid. B) aldehyde. C) ketone. D) alcohol.

B) aldehyde.

93) The compound below is a(n) O || H--C--H A) carboxylic acid. B) aldehyde. C) ketone. D) alcohol.

B) aldehyde.

75) Ethanol acts as a mild A) stimulant. B) depressant. C) hallucinogen. D) narcotic.

B) depressant.

15) Which of the following alkanes contains two carbons? A) ethene B) ethane C) methane D) methyne

B) ethane

16) What is the name of the compound that has the formula CH3CH3? A) methane B) ethane C) propane D) butane

B) ethane

80) The main ingredient in most antifreezes is A) ethanol. B) ethylene glycol. C) glycerol. D) gasoline.

B) ethylene glycol.

97) The simplest aldehyde is A) acetaldehyde. B) formaldehyde. C) benzaldehyde. D) unaldehyde.

B) formaldehyde.

67) In organic chemistry, compounds are generally classified by A) state. B) functional group. C) color. D) odor.

B) functional group.

65) Chlorinated hydrocarbons have been used as A) fuels. B) insecticides. C) propellants. D) refrigerants.

B) insecticides.

54) Benzene is an unsaturated hydrocarbon. An interesting property of benzene is that A) it is a liquid at room temperature. B) it does not undergo the same reactions that other unsaturated hydrocarbons do. C) it contains only carbon and hydrogen. D) it has a ring of carbon atoms in its structure.

B) it does not undergo the same reactions that other unsaturated hydrocarbons do.

9) The unique aspect of a saturated hydrocarbon is that it must contain A) only carbon and hydrogen. B) only single bonds. C) single and double bonds. D) single, double and triple bonds.

B) only single bonds.

20) Alkanes are often called A) unsaturated hydrocarbons. B) saturated hydrocarbons. C) carbohydrates. D) saturated fats.

B) saturated hydrocarbons.

1) Organic chemistry is most broadly defined as A) the chemistry of living systems. B) the chemistry of substances produced by living systems. C) the chemistry of the compounds of carbon. D) the chemistry of the non-metallic compounds.

C) the chemistry of the compounds of carbon.

42) A cyclic hydrocarbon containing six carbon atoms and one double bond will have the formula A) C6H16. B) C6H14. C) C6H12. D) C6H10.

D) C6H10.

34) The chemical formula of cyclohexane is A) C6H6. B) C6H8. C) C6H10. D) C6H12.

D) C6H12.

57) A molecular formula of an aromatic hydrocarbon is A) C7H16. B) C9H18. C) C5H8. D) C6H6.

D) C6H6.

90) Aldehydes and ketones share a common functional group. The group is the A) hydroxyl group. B) phenol group. C) ether group. D) carbonyl group.

D) carbonyl group.

31) A compound that contains only carbon and hydrogen is a(n) A) alcohol. B) carbohydrate. C) homolog. D) hydrocarbon.

D) hydrocarbon.

37) Propane, benzene, acetylene, and 2-butene are all examples of A) alkenes. B) alkanes. C) aromatic compounds. D) hydrocarbons.

D) hydrocarbons.

83) Compounds with a hydroxyl group attached directly to a benzene ring are called A) alcohols. B) aromatic hydrocarbons. C) ethers. D) phenols.

D) phenols.

30) A molecular formula of an alkane is A) C7H16. B) C6H12. C) C5H10. D) C4H8.

A) C7H16.

64) Perfluorocarbons have been used in which of the following? A) temporary blood substitutes B) nonstick cooking surfaces C) oxygen solvent for treatment of premature babies D) all of the above

?

60) When carbon tetrachloride reacts with hot water it produces phosgene (COCl2). Phosgene was used in poison-gas warfare in World War I. Based upon this chemistry, carbon tetrachloride is no longer used in A) fire extinguishers. B) anesthetics. C) chemical reactions. D) toilet bowl cleaners.

? A) fire extinguishers. or C) chemical reactions.

95) The compound below is commonly known as O || CH3--C--CH3 A) acetone. B) acetaldehyde. C) benzaldehyde. D) formaldehyde.

A) acetone.

78) Citronellol, C10H19OH, is a constituent of rose and germanium oils. It is used in perfumery. Chemically, citronellol is an A) alcohol. B) acid. C) alkane. D) amine.

A) alcohol.

71) The intoxicating alcohol in "alcoholic" beverages is A) ethanol. B) methanol. C) propanol. D) a mixture of the above

A) ethanol.

89) The abbreviation ROR' is used to represent the general formula of a(n) A) ether. B) alcohol. C) ester. D) phenol.

A) ether.

63) Perfluorocarbons are A) hydrocarbons in which all hydrogen atoms have been replaced by fluorine. B) hydrocarbons in which most hydrogen atoms have been replaced by fluorine. C) hydrocarbons in which there is one fluorine per carbon atom. D) none of the above

A) hydrocarbons in which all hydrogen atoms have been replaced by fluorine.

58) Chlorinated hydrocarbons, such as carbon tetrachloride CCl4, make good dry cleaning solvents because A) they dissolve in water. B) they dissolve water insoluble stains, like grease and oil. C) they are not liquids at room temperature. D) they cause no significant health problems.

B) they dissolve water insoluble stains, like grease and oil.

62) With respect to reactivity on the surface of the earth, chlorofluorocarbons are A) very reactive. B) very unreactive. C) moderately reactive. D) variable depending upon the chlorofluorocarbon.

B) very unreactive.

26) Which one of the following statements is NOT true of all alkanes? A) All alkanes burn to produce carbon dioxide and water. B) All alkanes consist of carbon and hydrogen. C) All alkanes exist as two or more isomers. D) All alkanes fit the general molecular formula CnH2n+2.

C) All alkanes exist as two or more isomers.

35) The chemical formula of cyclopentane is A) C5H6. B) C5H8. C) C5H10. D) C5H12.

C) C5H10.

48) A molecular formula of an alkyne is A) C7H16. B) C9H18. C) C5H8. D) C6H6.

C) C5H8.

94) The general formula for a ketone is A) ROR'. B) RCOOH. C) RCOR'. D) RCOOR'.

C) RCOR'.

79) A homologous series of alcohols contains A) the same number of carbon atoms, but a different number of hydroxyl groups. B) the same number of carbon atoms and the same number of hydroxyl groups. C) a different number of carbon atoms, but the same number of hydroxyl groups. D) only isomers.

C) a different number of carbon atoms, but the same number of hydroxyl groups.

11) Petroleum jelly is A) a mixture of low carbon number hydrocarbons. B) a mixture of moderate carbon number hydrocarbons. C) a mixture of higher carbon number hydrocarbons. D) none of the above

C) a mixture of higher carbon number hydrocarbons.

56) Organic compounds that contain a benzene ring or possess certain properties similar to those of benzene are called ________ compounds. A) alkaloid B) acidic C) aromatic D) saturated

C) aromatic

39) The most important commercial organic compound is A) methane, CH4. B) ethane, CH3CH3. C) ethylene, CH2CH2. D) propane, CH3CH2CH3.

C) ethylene, CH2CH2.

100) When a bee stings, one of the compounds it injects is A) acetic acid. B) butyric acid. C) formic acid. D) hydrochloric acid.

C) formic acid.

98) Esters have been widely used as A) refrigerants. B) insecticides. C) fragrances. D) disinfectants.

C) fragrances.