Deck 6: Organic Chemistry

Question 1

Which of these statements about alkanes is not correct?

A)Alkanes are nonpolar.
B)Alkanes are nonflammable.
C)Carbon must always form four bonds.
D)Alkanes have a general formula C_nH_{2n +2}.
E)There are no carbon to carbon double bonds.

Answer 1

Alkanes are nonflammable.

Question 2

Which of these statements about alkanes is not correct?

A)Alkanes are nonpolar.
B)Alkanes have a general formula C_nH_{2n+ 2}.
C)Hydrogen is always at a terminal position.
D)Alkanes with a carbon chain of four or less are liquids.
E)There are no carbon to carbon double bonds.

Answer 2

Alkanes with a carbon chain of four or less are liquids.

Question 3

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

A)alkane
B)aspirin
C)alcohol
D)gasoline
E)urea

Answer 3

urea

Question 4

Which of these elements is the basis for organic chemistry?

A)hydrogen
B)nitrogen
C)sodium
D)carbon
E)chlorine

Question 5

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

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

Question 6

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 the above.

Question 7

Which of these substances is not an organic compound?
I. Alcohol
II. Asprin
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 8

The belief that only living organisms could make organic compounds is known as

A)Wohlerism.
B)evolution.
C)vitalism.
D)alkanes.
E)synthesim.

Question 9

Which of these can be used to represent octane?

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

Question 10

Which of these compounds is an organic substance?

A)CaO
B)H₂O
C)PF₃
D)CCl₄
E)CuCl₂

Question 11

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

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

Question 12

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 13

Which of these is not an alkane?

A)C₃H₈
B)CH₄
C)C₂H₂
D)C₆H₁₄
E)C₄H₁₀

Question 14

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

A)ethane
B)butane
C)heptane
D)hexane
E)methane

Question 15

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

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

Question 16

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 the above.

Question 17

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

A)ethane
B)butane
C)propane
D)hexane
E)methane

Question 18

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

A)alkenes
B)alkynes
C)alkanes
D)All of these are correct.
E)A and B are not correct.

Question 19

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

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

Question 20

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

Question 21

Which of these statements is correct?

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

Question 22

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

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

Question 23

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 24

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

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

Question 25

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 the above

Question 26

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

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

Question 27

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

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

Question 28

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

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 29

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

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

Question 30

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

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

Question 31

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

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

Question 32

Which of these is the correct name for CH₃CH₂CCH?

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

Question 33

How many isomers of butane exist?

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

Question 34

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

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

Question 35

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 the above.

Question 36

How many structural isomers exist for pentane?

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

Question 37

Determine the number of structural isomers for C₃H₈.

A)0
B)1
C)2
D)3
E)4

Question 38

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)In alkenes and alkynes, the multiple bond may be found in different locations.
E)In alkanes, the greater the number of carbon atoms the greater the number of isomers.

Question 39

Determine the number of structural isomers for C₅H₁₂.

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

Question 40

Which of these molecules is not an isomer of hexene?

A)
B)
C)
D)

Question 41

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

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

Question 42

Which of these statements about benzene rings 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 carbons held together by six double bonds.

Question 43

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 44

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 45

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 46

Which of these is not a polycyclic aromatic compound?

A)
B)
C)
D)
E)

Question 47

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

A)pentanal
B)2-pentenal
C)pentenal
D)2-ethyl-propanal
E)benzaldehyde

Question 48

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

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 49

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

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

Question 50

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 on phosphorus atom.
D)Carboxylic acids contain at least two oxygen atoms.
E)An aldehyde contains a double bond.

Question 51

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

A)propanal
B)1-propanone
C)formaldehyde
D)3-propanal
E)benzaldehyde

Question 52

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

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

Question 53

Which of these is the correct name of 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 54

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

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

Question 55

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 have been credited with depletion of the ozone.

Question 56

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)All of these statements are correct.

Question 57

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

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 58

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

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

Question 59

Which of these does not always have a double bond?

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

Question 60

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

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

Question 61

Which of these is the correct name of 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 62

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

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

Question 63

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

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

Question 64

Which of these would not contain a carboxylic acid?

A)cinnamon
B)wasp sting
C)sour pickles
D)lemon
E)sweat

Question 65

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

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

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 these families is incorrectly matched to its general formula?

A)I
B)II
C)III
D)IV
E)Both I and IV are incorrect.

Question 68

Which of the following elements is  not present in an amide?

A)carbon
B)hydrogen
C)nitrogen
D)oxygen
E)An amide contains all of these elements.

Question 69

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

A)alcohols
B)aldehydes
C)amines
D)esters
E)ketones

Question 70

Which of these statements is not correct?

A)Ketones have the -one ending.
B)Aldehydes have an -ide ending.
C)Ketones have the general formula RCOR.
D)Formaldehyde is used as a biological preservative.
E)Ketones and aldehydes are found in natural flavors and odors.

Question 71

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

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