Questions & Answers
Browse all 25 questions from the
Foundations of Organic Chemistry study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
Which element is the fundamental backbone of all organic compounds?
-
A
Nitrogen
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B
Carbon
-
C
Oxygen
-
D
Hydrogen
2
What is the general chemical formula for a saturated alkane with 'n' carbon atoms?
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A
CnHn
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B
CnH2n
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C
CnH2n+2
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D
CnH2n-2
3
Which functional group is characterized by a carbon atom double-bonded to an oxygen atom and single-bonded to a hydroxyl group?
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A
Alcohol
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B
Ketone
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C
Carboxylic acid
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D
Ether
4
Which organic molecule is the simplest hydrocarbon?
-
A
Methane
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B
Ethane
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C
Propane
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D
Butane
5
What are isomers in the context of organic chemistry?
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A
Compounds with the same atoms but different arrangements
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B
Compounds with different chemical formulas
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C
Compounds that cannot form bonds
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D
Compounds that only contain carbon and hydrogen
6
Which of these molecules represents a cyclic hydrocarbon?
-
A
Hexane
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B
Benzene
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C
Octane
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D
Pentane
7
In organic nomenclature, what suffix is used to indicate the presence of an alcohol group?
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A
-one
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B
-ane
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C
-ol
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D
-ene
8
What type of bond is primarily responsible for the stability of the carbon backbone in organic molecules?
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A
Ionic
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B
Covalent
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C
Metallic
-
D
Hydrogen
9
What is the term for a hydrocarbon that contains at least one carbon-carbon double bond?
-
A
Alkane
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B
Alkyne
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C
Alkene
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D
Aromatic
10
Which element, when substituted for hydrogen in a hydrocarbon, creates an alkyl halide?
-
A
Helium
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B
Neon
-
C
Halogen
-
D
Argon
11
What is the chemical formula for Methane?
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A
CH4
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B
C2H6
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C
CH3OH
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D
C3H8
12
Which of the following organic compounds is a key component of vinegar?
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A
Ethanol
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B
Acetic acid
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C
Acetone
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D
Formaldehyde
13
What is the characteristic feature of a 'saturated' hydrocarbon?
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A
It contains double bonds
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B
It contains triple bonds
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C
It only contains single bonds
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D
It is a gas at room temperature
14
Which process involves joining small organic monomers to form long-chain polymers?
-
A
Combustion
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B
Polymerization
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C
Neutralization
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D
Oxidation
15
What is the IUPAC name for a three-carbon alkane chain?
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A
Methane
-
B
Ethane
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C
Propane
-
D
Butane
16
Which group of organic compounds generally follows the formula CnH2n?
-
A
Alkanes
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B
Alkenes
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C
Alkynes
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D
Alcohols
17
What is the primary organic compound used in the production of PET plastics?
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A
Ethylene glycol
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B
Methane
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C
Benzene
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D
Propane
18
Which organic compound is most commonly known as the solvent in nail polish remover?
-
A
Methanol
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B
Acetone
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C
Ethanoic acid
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D
Glucose
19
What is the shape of a carbon atom bonded to four other atoms in a tetrahedral arrangement?
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A
Planar
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B
Linear
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C
Tetrahedral
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D
Octahedral
20
Which of these is considered a carbohydrate?
-
A
Glucose
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B
Methane
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C
Ethane
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D
Ethanol
21
What do we call the organic compounds that contain a benzene ring?
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A
Aliphatic
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B
Aromatic
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C
Alicyclic
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D
Heterocyclic
22
What is the simplest alkyne, containing a carbon-carbon triple bond?
-
A
Ethene
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B
Ethyne
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C
Propene
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D
Butyne
23
Which functional group gives organic acids their characteristic properties?
-
A
Hydroxyl group
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B
Carboxyl group
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C
Amino group
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D
Carbonyl group
24
How many covalent bonds does a single neutral carbon atom typically form in an organic molecule?
25
Which molecule is the simplest member of the ketone family?
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A
Propanone
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B
Ethanone
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C
Butanone
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D
Pentanone
