Organic Chemistry Basics: Master the Fundamentals with Interactive Quizzes

Question 1

Which of the following compounds is an aromatic hydrocarbon?

Accepted Answer

Benzene

Answer

Ethene

Answer

Propane

Answer

Cyclohexane

Question 2

Which of the following is a nucleophilic reagent?

Accepted Answer

Hydroxide ion

Answer

Hydrogen ion

Answer

Sodium ion

Answer

Carbon dioxide

Question 3

What is the major product of the reaction between 1-propanol and concentrated sulfuric acid?

Accepted Answer

Propene

Answer

Propanal

Answer

Propanone

Answer

Propanoic acid

Question 4

Identify the functional group present in a carboxylic acid.

Accepted Answer

Carboxyl

Answer

Alcohol

Answer

Amine

Answer

Ether

Question 5

What hybridization is associated with the nitrogen atom in pyridine?

Accepted Answer

sp2

Answer

sp

Answer

sp3

Answer

sp3d

Question 6

Which of the following statements about **isomers** is true?

Accepted Answer

Isomers have the same molecular formula but different structural formulas.

Answer

Isomers have the same structural formula but different molecular formulas.

Answer

Isomers have different molecular formulas and different structural formulas.

Answer

Isomers have the same molecular formula and the same structural formula.

Question 7

Which of the following reactions is an example of **electrophilic addition**?

Accepted Answer

Addition of HBr to an alkene

Answer

Addition of NaOH to an ester

Answer

Substitution of a halogen in an alkyl halide by an alkoxide

Answer

Elimination of water from an alcohol

Question 8

Which of the following reactions would yield an **aldehyde**?

Accepted Answer

Oxidation of a primary alcohol

Answer

Reduction of a ketone

Answer

Hydrolysis of an ester

Answer

Dehydration of an alcohol

Question 9

Which of the following is the correct **IUPAC name** for the compound CH3CH(OH)COOH?

Accepted Answer

2-Hydroxypropanoic acid

Answer

1-Hydroxypropanoic acid

Answer

3-Hydroxypropanoic acid

Answer

2-Carboxypropanol

Question 10

Determine the hybridization of the carbon atom involved in the C=O double bond of an aldehyde.

Accepted Answer

sp2

Answer

sp

Answer

sp3

Answer

sp3d

Question 11

Identify the option that is not an isomer of butane.

Accepted Answer

Pentane

Answer

Isobutane

Answer

2-Methylpropane

Answer

2,2-Dimethylpropane

Question 12

Specify the functional group characteristic of an alcohol.

Accepted Answer

-OH

Answer

-COOH

Answer

-NH2

Answer

-C=O

Question 13

Determine the hybridization of the carbon atom involved in the C-H bond of an alkane.

Accepted Answer

sp3

Answer

sp

Answer

sp2

Answer

sp3d

Question 14

What is the hybridization of the carbon atom in methane (CH4)?

Accepted Answer

sp3

Answer

sp

Answer

sp2

Answer

sp3d

Question 15

Which of the following reactions is an example of a nucleophilic substitution reaction?

Accepted Answer

Reaction of an alkyl halide with an alkoxide ion

Answer

Addition of HCl to an alkene

Answer

Reaction of an alcohol with a carboxylic acid

Answer

Elimination of water from an alcohol

Question 16

What is the hybridization of the carbon atom in the C=C double bond in ethene?

Accepted Answer

sp2

Answer

sp

Answer

sp3

Answer

sp3d

Question 17

What is the hybridization of the carbon atom in the C-O single bond in an alcohol?

Accepted Answer

sp3

Answer

sp

Answer

sp2

Answer

sp3d

Question 18

Which of the following reactions is an example of an elimination reaction?

Accepted Answer

Elimination of water from an alcohol

Answer

Addition of HCl to an alkene

Answer

Reaction of an alcohol with an acid

Answer

Reaction of an alkyl halide with an alkoxide ion

Question 19

Which of the following is NOT a characteristic of organic compounds?

Accepted Answer

They are typically ionic in nature.

Answer

They contain carbon.

Answer

They are covalently bonded.

Answer

They exhibit a wide range of properties.

Question 20

Which of the following functional groups is present in alcohols?

Accepted Answer

-OH

Answer

-COOH

Answer

-NH2

Answer

-C=O

Question 21

What is the hybridization of the carbon atom in the following compound: CH2=CH2?

Accepted Answer

sp2

Answer

sp

Answer

sp3

Answer

sp3d

Question 22

Which of the following is an example of an isomer?

Accepted Answer

CH3CH2OH and CH3OCH3

Answer

CH3CH2OH and H2O

Answer

CH3CH2OH and CH3COOH

Answer

CH3CH2OH and NaCl

Question 23

What is the IUPAC name for the following compound: CH3CH=CHCH2CH3?

Accepted Answer

2-Pentene

Answer

1-Pentene

Answer

3-Pentene

Answer

4-Pentene

Question 24

Which of the following reactions is NOT a typical reaction of alkanes?

Accepted Answer

Hydrolysis

Answer

Combustion

Answer

Substitution

Answer

Addition

Question 25

What is the major product of the following reaction: CH3CH=CH2 + H2?

Accepted Answer

CH3CH2CH3

Answer

CH3CH=CH2

Answer

CH2=CH-CH3

Answer

CH3-CH(CH3)-CH3

Question 26

What is the hybridization of the nitrogen atom in the following compound: NH3?

Accepted Answer

sp3

Answer

sp

Answer

sp2

Answer

sp3d

Question 27

The correct IUPAC name for the compound with the molecular formula CH3CH2OH is:

Accepted Answer

Ethanol

Answer

Methanol

Answer

Propanol

Answer

Butanol

Question 28

The hybridization of the carbon atom in methane (CH4) is:

Accepted Answer

sp3

Answer

sp

Answer

sp2

Answer

sp3d

Question 29

An example of an electrophilic addition reaction is:

Accepted Answer

Addition of HBr to an alkene

Answer

Substitution of a halide with an alcohol

Answer

Elimination of HBr from an alkyl halide

Answer

Polymerization of an alkene

Question 30

The approximate bond angle around the carbon atom in a tetrahedral molecule is:

Accepted Answer

109.5 degrees

Answer

90 degrees

Answer

120 degrees

Answer

180 degrees

Question 31

A polar molecule is:

Accepted Answer

H2O

Answer

CH4

Answer

CO2

Answer

N2

Question 32

The compound with the highest boiling point is:

Accepted Answer

Butanoic acid

Answer

Butane

Answer

Butanol

Answer

Butylamine

Question 33

The major product of the reaction between ethene and hydrogen bromide (HBr) is:

Accepted Answer

1-Bromoethane

Answer

2-Bromoethane

Answer

Ethylene dibromide

Answer

No reaction occurs

Question 34

Which of the following compounds is an alkene?

Accepted Answer

CH2=CH2

Answer

CH3OH

Answer

CH4

Answer

CH3COOH

Question 35

What is the hybridization of the carbon atom in methane, CH4?

Accepted Answer

sp3

Answer

sp

Answer

sp2

Question 36

What is the IUPAC name for the following compound: CH3CH2CH(CH3)CH2CH3?

Accepted Answer

2-methylpentane

Answer

3-methylpentane

Answer

2-ethylbutane

Question 37

Which of the following is an isomer of butane?

Accepted Answer

Isobutane

Answer

Ethane

Answer

Propane

Question 38

Which of the following compounds is a hydrocarbon?

Accepted Answer

Benzene

Answer

Methylamine

Answer

Ethanol

Answer

Acetic acid

Question 39

What is the molecular formula of cyclohexane?

Accepted Answer

C6H12

Answer

C5H10

Answer

C7H14

Answer

C8H16

Question 40

Which of the following bonds is typically the strongest in organic compounds?

Accepted Answer

C-C

Answer

C-O

Answer

C-H

Question 41

What is the hybridization of the carbon atoms in ethene, C2H4?

Accepted Answer

sp2

Answer

sp

Answer

sp3

Question 42

Which of the following is a characteristic of organic compounds?

Accepted Answer

They contain carbon.

Answer

They have high melting points.

Answer

They are insoluble in nonpolar solvents.

Answer

They are ionic in nature.

Question 43

What is the name of the simplest hydrocarbon?

Accepted Answer

Methane

Answer

Propane

Answer

Ethane

Answer

Butane

Question 44

Which of the following functional groups is present in carboxylic acids?

Accepted Answer

-COOH

Answer

-NH2

Answer

-OH

Answer

-C=O

Question 45

What is the hybridization of the carbon atom in ethene?

Accepted Answer

sp²

Answer

sp³d

Answer

sp³

Answer

sp

Question 46

Which of the following compounds has the highest boiling point?

Accepted Answer

Ethanol

Answer

Ethane

Answer

Methane

Answer

Propane

Question 47

Which of the following is an example of an alkene?

Accepted Answer

Ethene

Answer

Methane

Answer

Propanoic acid

Answer

Ethanol

Question 48

Which of the following compounds is a tertiary alcohol?

Accepted Answer

(CH3)3COH

Answer

CH3CH2OH

Answer

CH3CH(OH)CH3

Answer

CH3CH2CH2OH

Question 49

Which of the following is a strong acid?

Accepted Answer

H2SO4

Answer

CH3COOH

Answer

NH3

Answer

H2O

Question 50

What is the hybridization of the nitrogen atom in pyridine?

Accepted Answer

sp²

Answer

sp³d

Answer

sp

Answer

sp³