Deck 6: Organic Chemistry

Question 1

Which of these is not a subfamily of the hydrocarbon family?

A) Alkenes
B) Alkynes
C) Alkanes
D) Functionalized hydrocarbons
E) Aromatic hydrocarbons

Answer 1

Functionalized hydrocarbons

Question 2

Which of these statements about alkanes is not correct?

A) Alkanes are nonpolar.
B) Alkanes are non-flammable.
C) The carbon in alkanes must always form four bonds.
D) Alkanes have the general formula C_nH_{2n +2}.
E) There are no carbon-carbon double bonds.

Answer 2

Alkanes are non-flammable.

Question 3

Which of these alkanes would be liquids at room temperature?
I. C₂H₆
II. C₃H₈
III. C₅H₁₀
IV. C₆H₁₄
V. CH₄

A) I and II
B) I, II, and III
C) III and IV
D) I, II, and V
E) I and V

Answer 3

III and IV

Question 4

Which of these compounds is an organic substance?

A) CaO
B) H₂O
C) PF₃
D) CCl₄
E) CuCl₂

Question 5

Which of the following is true of a hydrocarbon?

A) It consists of carbon and hydrogen atoms.
B) It can form a ring structure.
C) It is a good fuel for combustion reactions.
D) It can contain double or triple bonds.
E) All of these

Question 6

Which of these can be used to represent octane?

A) C₈H₁₈
B) CH₃(CH₂)₆CH₃
C) CH₃CH₂CH₂CH₂CH₂CH₂CH₂CH₃
D) All of these are correct.

Question 7

Which of these elements is the basis for organic chemistry?

A) Hydrogen
B) Nitrogen
C) Sodium
D) Carbon
E) Chlorine

Question 8

Which of these substances is/are  not an organic compound?
I. Alcohol
II. Aspirin
III. Gasoline
IV. Table salt

A) I and II
B) II and III
C) II and IV
D) II, III, and IV
E) IV only

Question 9

Which of these is not an alkane?

A) C₃H₈
B) CH₄
C) C₂H₂
D) C₆H₁₄
E) C₄H₁₀

Question 10

Which of these is the correct name for the structural formula?
​

A) Ethane
B) Butane
C) Heptane
D) Hexane
E) Methane

Question 11

Which of these is the correct condensed structural formula for pentane?

A) CH₃CH₂CH₃
B) CH₃CH₂CH₂CH₃
C) CH₃CH₂=CH₂CH₃
D) CH₃CH₂HC=CHCH₃
E) CH₃CH₂CH₂CH₂CH₃

Question 12

Which of these statements about alkenes is not correct?

A) Alkenes are unsaturated hydrocarbons.
B) Alkenes have the general formula C _n H _2n .
C) Hydrogen is always at a terminal position.
D) There are carbon to carbon triple bonds in alkenes.
E) There are carbon to carbon double bonds in alkenes.

Question 13

Which of these statements best explains the designation "organic"?

A) Any naturally occurring substance.
B) Any substance that contains carbon.
C) Any substance that contains ionic bonds.
D) Any substance that is formed by synthetic means.
E) A substance that is  formed as a result of vitalism.

Question 14

Which of these is the correct condensed structural formula for butane?

A) CH₃CH₂CH₃
B) CH₃CH₂CH₂CH₃
C) CH₃CH₂=CH₂CH₃
D) CH₃CH₂HC=CHCH₃
E) CH₃CH₂CH₂CH₂CH₃

Question 15

Which of these alkanes would be gases at room temperature?
I. C₂H₆
II. C₃H₈
III. C₅H₁₀
IV. C₆H₁₄
V. CH₄

A) I and II
B) I, II, and III
C) III and IV
D) I, II, and V
E) I and V

Question 16

The idea that organic compounds came only from living organisms is known as _____.

A) reductionism
B) evolution
C) vitalism
D) isomerism
E) metamerism

Question 17

Which of these was the first organic compound ever synthesized from an inorganic compound?

A) Alkane
B) Aspirin
C) Alcohol
D) Gasoline
E) Urea

Question 18

Which of these scientists was the first to synthesize an organic compound?

A) Wohler
B) Lewis
C) Watson
D) Dalton
E) Kekule

Question 19

Which of the following compounds has the following structural formula?
​

A) Ethane
B) Butane
C) Propane
D) Hexane
E) Methane

Question 20

How many hydrogen atoms would a straight chain or branched alkane that has 25 carbon atoms contain?

A) 25
B) 48
C) 50
D) 52
E) None of these

Question 21

How many isomers of butane exist?

A) 2
B) 3
C) 4
D) 5
E) 6

Question 22

Which of these is the correct name for CH₃(CH₂)₇CH₃?

A) Butene
B) Octane
C) Hexane
D) Nonane
E) Heptene

Question 23

Which of the following has the same molecular formula as hexane?

A) 3-methylpentane
B) 2,2-dimethylbutane
C) cyclohexane
D) a and b
E) All of these

Question 24

Which of these statements about isomers is incorrect ?

A) Isomers have the same chemical formula.
B) Isomers have different structural formulas.
C) Isomers have essentially the same properties.
D) Alkenes and alkynes exhibit isomerism based on the position of the double or triple bonds.
E) In alkanes, the greater the number of carbon atoms the greater the number of isomers.

Question 25

Determine the number of structural isomers of C₅H₁₂.

A) 2
B) 3
C) 4
D) 5
E) 6

Question 26

Which of these represents the general formula for alkynes?

A) C_nH_2n+2
B) C_nH_{2n − 2}
C) C_nH_2n
D) C_2nH_n
E) C_{n − 2}H_2n

Question 27

Which of these molecules is not an isomer of hexene?

A)
B)
C)
D)

Question 28

Molecules with the same chemical formula but different structural formulas are known as _____.

A) isomers
B) hydrocarbons
C) isotopes
D) stereocenters
E) radicals

Question 29

How many carbon atoms are there in a molecule of hexane?

A) 4
B) 5
C) 6
D) 7
E) 8

Question 30

Which of these statements is correct?

A) Alkanes are saturated hydrocarbons.
B) Alkenes have the general formula C_nH_2n.
C) Alkynes are hydrocarbon chains that contain a triple bond.
D) Unsaturated hydrocarbons contain at least one multiple bond.
E) All of these are correct.

Question 31

Which of these is the correct name for CH ₃ CH ₂ CCH?

A) Pentene
B) Pentyne
C) Butene
D) Butyne
E) Butadiene

Question 32

How many hydrogen atoms does a molecule of hexane contain?

A) 10
B) 11
C) 12
D) 13
E) 14

Question 33

Determine the number of structural isomers  of octane.

A) 0
B) 18
C) 20
D) 3
E) 4

Question 34

Which of these is the correct name for CH₃(CH₂)₄CH₃?

A) Butene
B) Octane
C) Hexane
D) Nonane
E) Heptene

Question 35

If an alkane undergoes a reaction to become an alkene, the newly formed alkene will most likely contain _____  hydrogen atom(s) than the alkane .

A) one more
B) two more
C) one fewer
D) two fewer
E) three fewer

Question 36

How many carbon atoms would a straight chain or branched alkane that has 26 hydrogen atoms contain?

A) 26
B) 12
C) 13
D) 14
E) None of these

Question 37

How many structural isomers does pentane have?

A) 1
B) 2
C) 3
D) 4
E) 5

Question 38

If an alkene undergoes a reaction to become an alkane, the newly formed alkane will most likely contain _____ hydrogen atom(s) than the alkene.

A) one more
B) two more
C) one fewer
D) two fewer
E) three fewer

Question 39

Which of these is the correct name for CH₃CH₂HC=CHCH₃?

A) Pentene
B) Pentyne
C) Hexene
D) Hexyne
E) Butadiene

Question 40

Which of these is the correct name for the structure  depicted?
 

A) 2-methylbutene
B) 2-methyl-1-butene
C) 2-methyl-2-butene
D) 2,3-dimethyl-1-butene
E) 2-methyl-3-ethyl-1-butene

Question 41

Which of these is not a polycyclic aromatic compound?

A)
B)
C)
D)
E)

Question 42

Which of these is the correct name for the structure  depicted?
​

A) 4-propyl-2-butyne
B) 2,3-dimethylhexene
C) 2,3-dimethylhexyne
D) 1,2,3-trimethylhexyne
E) 4,5-dimethyl-2-hexyne

Question 43

Which of these is the correct name for the structure below?
​

A) 2-butanone
B) Butanoic acid
C) 2-methyl-3-propanone
D) 3-methyl-2-butanone
E) 2,2-dimethyl-propanal

Question 44

Which of these is the correct name for the structure  depicted?
​

A) 3-ethyl-2-methylbutane
B) 3-ethyl-2-methylpentane
C) 2-ethyl-1,3-dimethylbutane
D) 1,2,3-trimethylpropane
E) 4,5-dimethyl-2-hexane

Question 45

Which of these functional groups does not contain a C=O in its general formula?

A) Aldehydes
B) Alcohols
C) Esters
D) Carboxylic acids
E) Ketones

Question 46

Which of these is not correct?

A) Alkynes always contain a triple bond.
B) Alcohols contain at least one oxygen atom.
C) Amines contain at least one phosphorus atom.
D) Carboxylic acids contain at least two oxygen atoms.
E) An aldehyde contains a double bond.

Question 47

Which of these is the correct name for CH₃CH₂HC=CHCHO?

A) Pentanal
B) 2-pentenal
C) Pentenal
D) 2-ethyl-propanal
E) Benzaldehyde

Question 48

Which of these is the generic symbol for the functional group "alcohols"?

A) R-Cl
B) R-OH
C)
D)
E)

Question 49

Which of these scientists is credited with the discovery of carbon's tendency to form four bonds?

A) Wohler
B) Lewis
C) Kekule
D) Dalton
E) Bohr

Question 50

Which of these scientists is credited with the  development  of the insecticide DDT?

A) Wohler
B) Lewis
C) Kekule
D) Muller
E) Bohr

Question 51

Which of these statements about chlorinated hydrocarbons is incorrect ?

A) Chlorinated hydrocarbons make good solvents.
B) Chlorinated hydrocarbons are used as insecticides.
C) Chlorinated hydrocarbons are relatively unstable and reactive.
D) Chlorinated hydrocarbons decrease the flammability of hydrocarbons.
E) Chlorinated hydrocarbons pose a threat to the ozone layer.

Question 52

Which of these is the correct name for the structure below?
​

A) Butenol
B) Isobutanol
C) 2-methyl-1-propanol
D) Isopropanol
E) Both C and D are correct.

Question 53

Which of these does not always have a double bond?

A) Amine
B) Aldehyde
C) Ketone
D) Alkene
E) Carboxylic acid

Question 54

Which of these statements is incorrect ?

A) Benzene is a particularly stable structure.
B) Benzene rings are sometimes called aromatic rings.
C) Benzene is a six-membered ring with the formula C₆H₆.
D) The structure of benzene was first determined by Kekule.
E) Benzene rings are composed of six carbon atoms held together by six double bonds.

Question 55

Which of these is the correct name for the structure depicted?
​

A) 2-methylhexane
B) 2-methylpropane
C) 2,3-dimethylbutane
D) 2,3-dimethylhexane
E) 2-methyl-3-ethylbutane

Question 56

Which of these is the correct name for the structure below?
​

A) Propanal
B) 1-propanone
C) Formaldehyde
D) 3-propanal
E) Benzaldehyde

Question 57

Which of these scientists is credited with proposing the ring structure of benzene?

A) Wohler
B) Lewis
C) Kekule
D) Dalton
E) Bohr

Question 58

Which of these statements about alcohols is incorrect ?

A) Alcohols are polar in nature.
B) Methanol is often used as a solvent.
C) Isopropyl alcohol is used as a disinfectant.
D) Ethanol is a component in alcoholic beverages.
E) Ethanol is a gas at room temperature.

Question 59

Which of these is the generic symbol for the functional group "aldehydes"?

A) R-Cl
B) R-OH
C)
D)
E)

Question 60

Which of these is the generic symbol for the functional group "ketones"?

A) R-Cl
B) R-OH
C)
D)
E)

Question 61

Which of the following types of compounds does not contain oxygen?

A) Alcohols
B) Aldehydes
C) Amines
D) Esters
E) Ketones

Question 62

Which of these statements is not correct?

A) The names of ketones end in -one.
B) The names of aldehydes end in -ide.
C) Ketones have the general formula RCOR.
D) Formaldehyde is used as a biological preservative.
E) Ketones and aldehydes contain the carbonyl group.

Question 63

Which of these families is incorrectly matched to its general formula?

A) I
B) II
C) III
D) IV
E) V

Question 64

Which of these is the general formula for a carboxylic acid?

A) RCOOH
B) RCOR
C) RCOH
D) ROR
E) RCOHR

Question 65

Which of the following alkanes is a thick liquid at room temperature?

A) CH₄
B) C₆H₁₄
C) C₂₁H₄₄
D) C₁₁H₂₄
E) C₃H₈

Question 66

Which of these families is incorrectly matched to its general formula?

A) I
B) II
C) III
D) IV
E) V

Question 67

Which of the following functionalized hydrocarbons is present in oil of jasmine?

A) Acetone
B) Ethyl butyrate
C) Benzyl acetate
D) Butanedione
E) Ethanol

Question 68

Which of these is the correct name for the structure below?
​

A) 2-ethyl-4-butanone
B) 2-ethylbutanoic acid
C) 2-ethyl-butanal
D) 2-ethyl-3-methylpropanal
E) 2,3-dimethyl-propanal

Question 69

Which of these families is incorrectly matched to its general formula?

A) I
B) II
C) III
D) IV
E) V

Question 70

Which of the following elements is generally present in an amine apart from carbon and hydrogen?

A) Chlorine
B) Argon
C) Helium
D) Boron
E) Nitrogen

Question 71

_____ are the hydrocarbons that contain six-carbon rings.

A) Alkanes
B) Alkenes
C) Alkynes
D) Aromatic hydrocarbons
E) Functionalized hydrocarbons

Question 72

Which of these is the correct name for the structure  below ?
​

A) Diethyl ether
B) Butanone
C) Ethyl ethlyate
D) 1,4-dimethyl ethanone
E) Diethylethanal

Question 73

Which of these families is incorrectly matched to its general formula?

A) I
B) II
C) III
D) IV
E) V

Question 74

Which of the following organic compounds is used as moth balls?

A) C₁₀H₈
B) C₆H₆
C) C₁₆H₁₀
D) C₁₂H₂₆
E) C₈H₁₆

Question 75

Which of these does  not contain a carboxylic acid?

A) Cinnamon
B) Wasp sting
C) Sour pickles
D) Lemon
E) Vinegar

Question 76

Which of the following alcohols breaks down into formic acid in the liver?

A) Isopropyl alcohol
B) Methanol
C) Ethanol
D) Isobutyl alcohol
E) 1-Pentanol