Deck 19: Introduction to Organic Chemistry Online Only

Question 1

In which hydrocarbon series is there a single covalent bond between all carbon atoms?

A)Aromatics
B)Alkanes
C)Alkenes
D)Alkynes

Answer 1

Alkanes

Question 2

Which compound is saturated?

A)CH₄
B)C₃H₆
C)C₂H₂
D)C₆H₆

Answer 2

CH₄

Question 3

C_nH_2n-6 is the general formula for the

A)Alkenes
B)Alkanes
C)Alkynes
D)Aromatics

Answer 3

Aromatics

Question 4

How many pairs of electrons are shared in a single covalent bond?

A)One
B)Two
C)Three
D)Four

Question 5

Which compound is more soluble in water?

A)ethane
B)ethene
C)dimethyl ether
D)ethanol

Question 6

Which is saturated?

A)C₂H₄
B)C₃H₆
C)C₆H₈
D)C₂H₆

Question 7

Which hydrocarbon series contains a double covalent bond between carbon atoms?

A)Alkynes
B)Alkenes
C)Alkanes
D)Aromatics

Question 8

Which hydrocarbon series contains a triple covalent bond between carbon atoms?

A)Alkynes
B)Alkanes
C)Alkenes
D)Aromatics

Question 9

How many pairs of electrons are shared in a triple covalent bond?

A)One
B)Two
C)Three
D)Four

Question 10

What type of compound is composed of only carbon and hydrogen atoms?

A)Carbohydrate
B)Hydrocarbon
C)Ester
D)Carboxylic acid

Question 11

Which is unsaturated?

A)C₂H₆
B)C₄H₁₀
C)C₅H₁₂
D)C₆H₁₂

Question 12

Which of the following structures represents a molecule of benzene?

A)
B)
C)
D)

Question 13

C_nH_2n is the general formula for the

A)Alkynes
B)Alkenes
C)Alkanes
D)Aromatics

Question 14

Which hydrocarbon series is saturated?

A)Alkenes
B)Alkynes
C)Alkanes
D)Aromatics

Question 15

Alkyl groups have the general formula

A)C_nH_2n
B)C_nH_2n+1
C)C_nH_2n+2
D)C_nH_n+2

Question 16

Which hydrocarbon series contains a benzene ring?

A)Alkanes
B)Alkenes
C)Alkynes
D)Aromatics

Question 17

How many pairs of electrons are shared in a double covalent bond?

A)One
B)Two
C)Three
D)Four

Question 18

C_nH_2n+2 is the general formula for the

A)Alkenes
B)Alkynes
C)Alkanes
D)Aromatics

Question 19

Which is unsaturated?

A)C₃H₈
B)C₄H₁₀
C)CH₄
D)C₅H₈

Question 20

C_nH_2n-2 is the general formula for the

A)Alkynes
B)Alkanes
C)Alkenes
D)Aromatics

Question 21

Which has the greatest number of isomers?

A)CH₄
B)C₂H₆
C)C₃H₈
D)C₄H₁₀

Question 22

CH₃CH=CHCH₂CH₃ is

A)pentane.
B)pentyne.
C)2-pentene.
D)3-pentene.

Question 23

CH₃CH₂CH₂CH(CH₃)₂ is

A)heptane.
B)2-methylpentane.
C)1,1-dimethylbutane.
D)hexane.

Question 24

In any hydrocarbon series,as the number of carbon atoms increases,the number of isomers

A)increases.
B)decreases.
C)remains the same.

Question 25

Which has the greatest number of isomers?

A)C₃H₈
B)C₁₂H₂₆
C)C₅H₁₂
D)C₇H₁₆

Question 26

C₂H₆ is

A)propane.
B)ethane.
C)butane.
D)methane.

Question 27

CH₃CH₂CH(CH₃)₂ is

A)1,1-dimethylpropane
B)3,3-dimethylpropane
C)2-methylbutane
D)4-methylbutane

Question 28

Which hydrocarbon can undergo an addition reaction?

A)CH₄
B)C₂H₄
C)C₂H₆
D)C₃H₈

Question 29

C₃H₈ is

A)octane.
B)butane.
C)propane.
D)methane.

Question 30

Two or more different compounds with the same molecular formula are

A)Isomers
B)Isotopes
C)Hypermeres
D)Hypertopes

Question 31

Which hydrocarbon can undergo an addition reaction?

A)C₄H₈
B)C₃H₈
C)C₂H₆
D)C₆H₆

Question 32

CH₃CH=CH₂ is

A)propane.
B)1-methylethene.
C)propene.
D)butane.

Question 33

Which is benzene?

A)C₃H₃
B)C₆H₆
C)C₈H₈
D)C₉H₉

Question 34

Which is toluene?

A)C₆H₆
B)C₇H₈
C)C₆H₈
D)C₈H₇

Question 35

The difference between any two consecutive members of a homologous series of hydrocarbons is

A)One carbon atom and one oxygen atom
B)One carbon atom and two hydrogen atoms
C)Two carbon atoms and one hydrogen atom
D)Two carbon atoms and two hydrogen atoms

Question 36

C₂H₂ is

A)methane.
B)methyne.
C)ethane.
D)ethyne.

Question 37

Complete combustion of an alkane produces

A)CO_2,only
B)H₂O,only
C)CO₂ and H₂O
D)CO and H₂O

Question 38

Which hydrocarbon can undergo a substitution reaction?

A)C₃H₄
B)C₂H₄
C)C₃H₆
D)CH₄

Question 39

Which is a carboxylic acid?

A)CH₃OH
B)HCOOH
C)CH₃OCH₃
D)CH₄

Question 40

Which hydrocarbon can undergo a substitution reaction?

A)C₂H₂
B)C₆H₆
C)C₃H₆
D)C₄H₆

Question 41

Which is a ketone?

A)CH₃COCH₃
B)CH₃COOH
C)C₂H₅OH
D)CH₃CHO

Question 42

Which is an ether?

A)HCOOH
B)CH₃COCH₃
C)CH₃OCH₃
D)CH₃OH

Question 43

Which is a trihydroxy alcohol?

A)3-pentanol
B)1,2,3-propanetriol
C)3-propanol
D)1-propanol

Question 44

Which molecule contains seven carbon atoms?

A)3-methylpentane
B)Hexane
C)2-methylpropane
D)2,3-dimethylpentane

Question 45

Which is the second member of the alkene series?

A)C₂H₆
B)C₂H₄
C)C₃H₈
D)C₃H₆

Question 46

A molecule of propane and a molecule of propene have the same

A)general formula.
B)molecular formula.
C)structural formula.
D)number of carbon atoms.

Question 47

What is the total number of carbon atoms in a molecule of 2-methyl-4-ethyloctane?

A)8
B)11
C)14
D)17

Question 48

Which is an ester?

A)CH₃OH
B)CH₃CH₂COOCH₃
C)HCOOH
D)HCHO

Question 49

Which compound will form an aqueous solution that will turn blue litmus paper red?

A)CH₃OH
B)CH₃COOH
C)CH₃COOCH₃
D)HCHO

Question 50

Which pair contains two molecules from the same homologous series of hydrocarbons?

A)CH₄ and C₂H₂
B)C₂H₆ and C₅H₁₂
C)C₂H₆ and C₃H₆
D)C₂H₂ and C₂H₆

Question 51

Which is a dihydroxy alcohol?

A)2-pentanol
B)2,3-butanediol
C)Ethanol
D)1,2,3-propanetriol

Question 52

Which is a secondary alcohol?

A)1,2-propanediol
B)3-pentanol
C)Ethanol
D)1-propanol

Question 53

Which pair contains two molecules from the same homologous series of hydrocarbons?

A)C₆H₆ and C₇H₈
B)C₃H₈ and C₃H₆
C)C₆H₆ and C₂H₆
D)C₆H₆ and C₇H₆

Question 54

Which contains seven carbon atoms?

A)2,2-dimethylbutane
B)2,2-dimethylpropane
C)Benzene
D)Methylbenzene

Question 55

What is the total number of carbon atoms in a molecule of toluene?

A)1
B)6
C)7
D)12

Question 56

Which molecule contains five carbon atoms?

A)Propane
B)2-methylpropane
C)Butane
D)2-methylbutane

Question 57

Which two compounds are isomers?

A)Methane and methanol
B)Propane and butane
C)Propane and propene
D)2-methylpropane and butane

Question 58

Which is a primary alcohol?

A)Glycerol
B)1,2-ethanediol
C)Ethanol
D)1,2,3-propanetriol

Question 59

Which is an aldehyde?

A)HCOOH
B)C₂H₅OH
C)CH₃COCH₃
D)HCHO

Question 60

Which two compounds are isomers?

A)Ethanol and 1-propanol
B)1-propanol and 2-propanol
C)2-propanol and 2-propanal
D)Propane and propyne

Question 61

Which of the following is not the correct name for the alkane shown with it?

A)C₂H₆,Ethane
B)C₅H₁₂,Propane
C)C₇H₁₆,Heptane
D)C₁₀H₂₂,Decane

Question 62

What is the name of CH₃-O-CH₂CH₃?

A)Propanone
B)Propanal
C)Propanol
D)Methyl ethyl ether

Question 63

Which compound is not a member of the same homologous series as the others?

A)C₆H₁₄
B)C₅H₁₀
C)CH₄
D)C₃H₈

Question 64

What is the name of CH₃(CH₂)₄COOH?

A)Hexanoic acid
B)Heptanoic acid
C)Benzoic acid
D)Propanoic acid

Question 65

What is the name for the following hydrocarbon?

A)2-ethyl-3-methylpentane
B)3,4-dimethylhexane
C)2,3-diethylbutane
D)octane

Question 66

What is the name of C₆H₅COOH?

A)Heptanoic acid
B)Hexanoic acid
C)Benzoic acid
D)Phenol

Question 67

The number of possible isomers of C₆H₁₄ is

A)3
B)5
C)6
D)8

Question 68

Which of these has no structural isomers?

A)C₅H₁₀
B)C₄H₁₀
C)C₃H₈
D)C₆H₁₂

Question 69

What is the name of CH₃CH₂COOCH₃?

A)Methyl propanoate
B)Propyl methanoate
C)Methyl ethanoate
D)Methyl propyl ether

Question 70

The reaction: CH₂=CH₂ + Br₂ $\rarr$ CH₂BrCH₂Br,is an example of

A)dehalogenation.
B)dehydration.
C)addition.
D)substitution.

Question 71

Name the following compound:

A)methyl butanoate
B)hydroxybutylketone
C)2-methylpropanal
D)2-methylpropanoic acid

Question 72

Which is not an aromatic compound?

A)C₆H₆
B)C₆H₅OH
C)C₆H₁₄
D)C₆H₅CH₃

Question 73

The number of possible isomers of C₅H₁₂ is

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

Question 74

The general formula for a ketone is

A)RCHO
B)ROR
C)RCOOR
D)R₂CO

Question 75

What is the maximum number of covalent bonds a carbon atom can form?

A)One
B)Two
C)Three
D)Four

Question 76

Which of the following is an isomer of butane?

A)
B)
C)
D)

Question 77

Which of the following compounds is a structural isomer of hexane?

A)
B)
C)
D)

Question 78

What is the name of CH₃(CH₂)₂CH₂Cl?

A)3-chlorobutane
B)1-chlorobutane
C)3-chloropropane
D)1-chloropropane

Question 79

Para-dichlorobenzene is also known as

A)1,2-dichlorobenzene
B)1,3-dichlorobenzene
C)1,4-dichlorobenzene
D)1,5-dichlorobenzene

Question 80

Name the following compound:

A)4-methyl-1-pentanol
B)2-methyl-5-pentanol
C)1-hexanol
D)4,4-dimethyl-1-butanol