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Organic Chemistry: Introduction Practice Tests

These Grade 12 Science practice tests introduce organic chemistry through carbon structure, hydrocarbons, nomenclature, functional groups, isomerism, reactions, polymers, spectroscopy, chromatography, and laboratory safety.

Skills covered

  • Explaining carbon tetravalence, alkanes, alkenes, alkynes, aromatic compounds, polarity, hydrogen bonding, and structural isomerism
  • Applying parent-chain naming, substituents, locants, stereoisomer descriptions, common functional groups, and simple IUPAC names
  • Recognizing addition, substitution, elimination, oxidation, reduction, combustion, hydrolysis, polymerization, nucleophiles, and electrophiles
  • Identifying alcohols, aldehydes, ketones, carboxylic acids, esters, amines, amides, ethers, phenols, and dehydration synthesis
  • Using chromatography, infrared spectroscopy, NMR, distillation, green chemistry, mechanisms, and safe solvent handling

How to use these practice tests

Start with the carbon framework and functional groups, then identify how structure affects naming, polarity, intermolecular forces, and reaction behavior. Track electrons and bonds when analyzing mechanisms.

For more Grade 12 Science practice, return to the Grade 12 Science category.

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Grade 12 Organic Chemistry: Introduction Practice Tests

Practice Grade 12 Science questions about carbon bonding, hydrocarbons, nomenclature, functional groups, isomers, reactions, polymers, and organic analysis.

Choose the best answer. Relate molecular structure to naming, properties, reactivity, and analytical evidence, and follow safe laboratory practice.

10 Questions
0/10 Questions0 %
Correct 0
Incorrect 0
Unanswered 10
1. QuestionMultiple choice

What is the alcohol functional group?

Please select an answer first.

Correct answer: A

The correct answer is A hydroxyl group, –OH, bonded to carbon.

  1. Identify the organic chemistry concept: Determine whether the question concerns carbon structure, hydrocarbons, nomenclature, functional groups, reactions, polymers, or laboratory analysis.
  2. Apply the structural principle: Alcohols contain a hydroxyl group, which contributes polarity and hydrogen bonding.
  3. Connect structure and reactivity: The correct answer is A hydroxyl group, –OH, bonded to carbon.

Alcohols contain a hydroxyl group, which contributes polarity and hydrogen bonding.

2. QuestionMultiple choice

What distinguishes an aldehyde from a ketone?

Please select an answer first.

Correct answer: B

The correct answer is An aldehyde has a carbonyl group at the end of a carbon chain.

  1. Identify the organic chemistry concept: Determine whether the question concerns carbon structure, hydrocarbons, nomenclature, functional groups, reactions, polymers, or laboratory analysis.
  2. Apply the structural principle: Aldehydes have a terminal carbonyl carbon bonded to hydrogen, while ketones have the carbonyl within the chain.
  3. Connect structure and reactivity: The correct answer is An aldehyde has a carbonyl group at the end of a carbon chain.

Aldehydes have a terminal carbonyl carbon bonded to hydrogen, while ketones have the carbonyl within the chain.

3. QuestionMultiple choice

Where is the carbonyl group located in a ketone?

Please select an answer first.

Correct answer: C

The correct answer is Within the carbon chain and bonded to two carbon groups.

  1. Identify the organic chemistry concept: Determine whether the question concerns carbon structure, hydrocarbons, nomenclature, functional groups, reactions, polymers, or laboratory analysis.
  2. Apply the structural principle: A ketone has an internal carbonyl group whose carbon is attached to two carbon-containing groups.
  3. Connect structure and reactivity: The correct answer is Within the carbon chain and bonded to two carbon groups.

A ketone has an internal carbonyl group whose carbon is attached to two carbon-containing groups.

4. QuestionMultiple choice

What functional group defines a carboxylic acid?

Please select an answer first.

Correct answer: D

The correct answer is A carbonyl group and hydroxyl group attached to the same carbon.

  1. Identify the organic chemistry concept: Determine whether the question concerns carbon structure, hydrocarbons, nomenclature, functional groups, reactions, polymers, or laboratory analysis.
  2. Apply the structural principle: The carboxyl group, –COOH, can donate a proton and participates in characteristic acid reactions.
  3. Connect structure and reactivity: The correct answer is A carbonyl group and hydroxyl group attached to the same carbon.

The carboxyl group, –COOH, can donate a proton and participates in characteristic acid reactions.

5. QuestionMultiple choice

What is an ester linkage?

Please select an answer first.

Correct answer: A

The correct answer is A carbonyl bonded to an oxygen that is bonded to another carbon group.

  1. Identify the organic chemistry concept: Determine whether the question concerns carbon structure, hydrocarbons, nomenclature, functional groups, reactions, polymers, or laboratory analysis.
  2. Apply the structural principle: Esters contain the –COO– arrangement and commonly form from carboxylic acids and alcohols.
  3. Connect structure and reactivity: The correct answer is A carbonyl bonded to an oxygen that is bonded to another carbon group.

Esters contain the –COO– arrangement and commonly form from carboxylic acids and alcohols.

6. QuestionMultiple choice

What functional group is characteristic of an amine?

Please select an answer first.

Correct answer: B

The correct answer is A nitrogen atom bonded to carbon or hydrogen with a lone pair.

  1. Identify the organic chemistry concept: Determine whether the question concerns carbon structure, hydrocarbons, nomenclature, functional groups, reactions, polymers, or laboratory analysis.
  2. Apply the structural principle: Amines contain nitrogen and often act as bases because the nitrogen has an available lone pair.
  3. Connect structure and reactivity: The correct answer is A nitrogen atom bonded to carbon or hydrogen with a lone pair.

Amines contain nitrogen and often act as bases because the nitrogen has an available lone pair.

7. QuestionMultiple choice

What is an amide?

Please select an answer first.

Correct answer: C

The correct answer is A carbonyl group bonded directly to nitrogen.

  1. Identify the organic chemistry concept: Determine whether the question concerns carbon structure, hydrocarbons, nomenclature, functional groups, reactions, polymers, or laboratory analysis.
  2. Apply the structural principle: Amides contain the –CON– arrangement and are important in proteins and many synthetic materials.
  3. Connect structure and reactivity: The correct answer is A carbonyl group bonded directly to nitrogen.

Amides contain the –CON– arrangement and are important in proteins and many synthetic materials.

8. QuestionMultiple choice

What is an ether?

Please select an answer first.

Correct answer: D

The correct answer is An oxygen atom bonded to two carbon groups.

  1. Identify the organic chemistry concept: Determine whether the question concerns carbon structure, hydrocarbons, nomenclature, functional groups, reactions, polymers, or laboratory analysis.
  2. Apply the structural principle: Ethers have a C–O–C linkage and can act as hydrogen-bond acceptors.
  3. Connect structure and reactivity: The correct answer is An oxygen atom bonded to two carbon groups.

Ethers have a C–O–C linkage and can act as hydrogen-bond acceptors.

9. QuestionMultiple choice

What is a phenol?

Please select an answer first.

Correct answer: A

The correct answer is An aromatic ring with a hydroxyl group directly attached.

  1. Identify the organic chemistry concept: Determine whether the question concerns carbon structure, hydrocarbons, nomenclature, functional groups, reactions, polymers, or laboratory analysis.
  2. Apply the structural principle: The hydroxyl group is bonded directly to an aromatic ring, giving phenols distinctive acidity and reactivity.
  3. Connect structure and reactivity: The correct answer is An aromatic ring with a hydroxyl group directly attached.

The hydroxyl group is bonded directly to an aromatic ring, giving phenols distinctive acidity and reactivity.

10. QuestionMultiple choice

What is dehydration synthesis in organic chemistry?

Please select an answer first.

Correct answer: B

The correct answer is Joining molecules while removing a molecule of water.

  1. Identify the organic chemistry concept: Determine whether the question concerns carbon structure, hydrocarbons, nomenclature, functional groups, reactions, polymers, or laboratory analysis.
  2. Apply the structural principle: Condensation or dehydration reactions form a new bond while eliminating water, often during polymer or ester formation.
  3. Connect structure and reactivity: The correct answer is Joining molecules while removing a molecule of water.

Condensation or dehydration reactions form a new bond while eliminating water, often during polymer or ester formation.

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