Functional Groups-a Level 1st Year
Questions and Answers
- 1.
Name the functional group
- A.
Phenol
- B.
Cycloalkane
- C.
Cycloalkene
- D.
Alkene
Correct Answer
A. PhenolExplanation
Phenol is the correct answer because it is a functional group that consists of a hydroxyl group (-OH) attached to an aromatic ring. It is commonly found in compounds such as antiseptics, disinfectants, and dyes. Cycloalkane, cycloalkene, and alkene are not the correct answers as they represent different types of hydrocarbon compounds without the presence of a hydroxyl group.Rate this question:
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- 2.
Name the functional group
- A.
Alcohol
- B.
Acid anhydride
- C.
Ether
- D.
Ester
Correct Answer
C. EtherExplanation
The correct answer is ether. An ether is a functional group that consists of an oxygen atom bonded to two alkyl or aryl groups. It is denoted by the general formula R-O-R', where R and R' represent alkyl or aryl groups. Ethers are characterized by their unique physical properties, such as their low boiling points and lack of hydrogen bonding. They are commonly used as solvents and as intermediates in organic synthesis.Rate this question:
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- 3.
Name the functional group
- A.
Ketone
- B.
Carboxylic acid
- C.
Primary alcohol
- D.
Aldehyde
Correct Answer
D. AldehydeExplanation
The functional group being referred to in this question is the aldehyde. Aldehydes are organic compounds that contain a carbonyl group (-C=O) bonded to at least one hydrogen atom. They are characterized by the presence of a terminal carbonyl group, meaning that the carbonyl group is located at the end of the carbon chain. Aldehydes are commonly used in various chemical reactions and have important roles in biological processes.Rate this question:
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- 4.
Name the functional group
- A.
Ether
- B.
Tertiary alcohol
- C.
Primary alcohol
- D.
Alkane
Correct Answer
B. Tertiary alcoholExplanation
The correct answer is tertiary alcohol. This is because a tertiary alcohol is characterized by a hydroxyl group (-OH) attached to a carbon atom that is bonded to three other carbon atoms. In this case, the compound mentioned in the question is likely to have this arrangement, making it a tertiary alcohol.Rate this question:
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- 5.
Name the functional group
- A.
Acyl halide
- B.
Ester
- C.
Ketone
- D.
Aldehyde
Correct Answer
C. KetoneExplanation
The correct answer is ketone. A ketone is a functional group that consists of a carbonyl group bonded to two carbon atoms. It is characterized by the presence of a double bond between the carbon and oxygen atoms. Ketones are commonly found in organic compounds and play a significant role in various biological and chemical processes. They are named by replacing the -e in the parent alkane name with -one.Rate this question:
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- 6.
Name the functional group
- A.
Ester
- B.
Ether
- C.
Phenol
- D.
Alkene
Correct Answer
A. EsterExplanation
The correct answer is ester. Ester is a functional group that is characterized by the presence of a carbon-oxygen double bond (C=O) and an oxygen atom bonded to a carbon atom through a single bond (C-O). Esters are commonly found in many organic compounds, such as fats, oils, and fragrances. They are formed by the reaction between an alcohol and an organic acid, resulting in the elimination of water. Esters have a pleasant smell and are often used as flavorings and fragrances in various products.Rate this question:
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- 7.
Name the functional group
- A.
Tertiary alcohol
- B.
Primary alcohol
- C.
Ketone
- D.
Alkene
Correct Answer
B. Primary alcoholExplanation
A primary alcohol is a type of alcohol where the hydroxyl (-OH) group is attached to a carbon atom that is bonded to only one other carbon atom. In this case, the functional group of the compound is the hydroxyl group (-OH) attached to a primary carbon atom. This is different from a tertiary alcohol, where the hydroxyl group is attached to a carbon atom that is bonded to three other carbon atoms. A ketone is a compound that contains a carbonyl group (C=O) bonded to two other carbon atoms. An alkene is a compound that contains a carbon-carbon double bond.Rate this question:
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- 8.
Name the functional group
- A.
Ester
- B.
Ether
- C.
Acid halide
- D.
Carboxylic acid
Correct Answer
A. EsterExplanation
The correct answer is "ester". An ester is a functional group that consists of a carbonyl group bonded to an oxygen atom, which is then bonded to an alkyl or aryl group. Esters are commonly found in many organic compounds, such as fats, oils, and fragrances. They are formed through the reaction between a carboxylic acid and an alcohol, resulting in the loss of a water molecule. Esters have a pleasant fruity smell and are often used in perfumes and flavorings.Rate this question:
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- 9.
Name the functional group
- A.
Tertiary alcohol
- B.
Ether
- C.
Carboxylic acid
- D.
Secondary alcohol
Correct Answer
D. Secondary alcoholExplanation
A secondary alcohol is a type of alcohol where the hydroxyl group (-OH) is attached to a carbon atom that is bonded to two other carbon atoms. In this case, the given compound is a secondary alcohol because the hydroxyl group is attached to a carbon atom that is bonded to two other carbon atoms.Rate this question:
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- 10.
Name the functional group
- A.
Carboxylic acid
- B.
Aldehyde
- C.
Ether
- D.
Ester
Correct Answer
C. EtherExplanation
The correct answer is ether. An ether is a functional group that consists of an oxygen atom bonded to two alkyl or aryl groups. It is characterized by the general formula R-O-R', where R and R' can be any organic group. Ethers are commonly used as solvents and have a wide range of applications in organic synthesis. They are distinct from carboxylic acids, aldehydes, and esters, which have their own unique functional groups and chemical properties.Rate this question:
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- 11.
Name the functional group
- A.
Benzene ring
- B.
Primary alcohol
- C.
Ketone
- D.
Aldehyde
Correct Answer
C. KetoneExplanation
A ketone is a functional group that consists of a carbon double-bonded to an oxygen atom, with two alkyl or aryl groups attached to the carbon. In the given options, benzene ring and primary alcohol do not match the description of a ketone. An aldehyde also contains a carbon double-bonded to an oxygen atom, but it has at least one hydrogen atom attached to the carbon, whereas a ketone does not. Therefore, the correct answer is ketone.Rate this question:
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- 12.
Name the functional group
- A.
Ester
- B.
Alkene
- C.
Alkane
- D.
Carboxylic acid
Correct Answer
B. AlkeneExplanation
The correct answer is alkene. An alkene is a type of hydrocarbon that contains a carbon-carbon double bond. It is characterized by the presence of a functional group called a double bond, which gives it its unique chemical properties. Esters, alkanes, and carboxylic acids do not have double bonds and therefore do not belong to the alkene functional group.Rate this question:
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- 13.
Name the functional group
- A.
Aldehyde
- B.
Acid halide
- C.
Phenol
- D.
Ketone
Correct Answer
A. AldehydeExplanation
The correct answer is aldehyde. Aldehydes are organic compounds that contain a carbonyl group (C=O) bonded to at least one hydrogen atom. They are characterized by the presence of the -CHO functional group. Aldehydes are commonly found in various organic compounds and play important roles in various chemical reactions and biological processes. Examples of aldehydes include formaldehyde and acetaldehyde.Rate this question:
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- 14.
Name the functional group
- A.
Alkene
- B.
Acyl anhydride
- C.
Aldehyde
- D.
Carboxylic acid
Correct Answer
D. Carboxylic acidExplanation
The functional group in the given list is carboxylic acid. Carboxylic acids are organic compounds that contain a carboxyl group, which consists of a carbonyl group (C=O) and a hydroxyl group (OH) attached to the same carbon atom. This functional group is commonly found in organic acids, such as acetic acid and formic acid, and it is responsible for their acidic properties. Carboxylic acids are important in various biological processes and have applications in industries such as pharmaceuticals and food production.Rate this question:
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- 15.
Name the functional group
- A.
Arene
- B.
Cycloalkene
- C.
Phenol
- D.
Cycloalkane
Correct Answer
A. AreneExplanation
The correct answer is "arene." Arene refers to a functional group that consists of a ring of carbon atoms with alternating single and double bonds. It is commonly found in aromatic compounds, such as benzene.Rate this question:
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- 16.
Name the functional group
- A.
Alkene
- B.
Ether
- C.
Alkane
- D.
Ester
Correct Answer
C. AlkaneExplanation
The correct answer is alkane. Alkane is a type of hydrocarbon that consists of only single bonds between carbon atoms. It is a saturated hydrocarbon and does not contain any functional groups. In contrast, alkenes have a carbon-carbon double bond, ethers have an oxygen atom bonded to two carbon atoms, and esters have a carbonyl group bonded to an oxygen atom and an alkyl group. Therefore, alkane is the only option without a functional group.Rate this question:
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- 17.
Name the functional group
- A.
Acid anhydride
- B.
Acyl halide
- C.
Primary alcohol
- D.
Ester
Correct Answer
A. Acid anhydrideExplanation
The correct answer is acid anhydride. Acid anhydrides are functional groups formed by the removal of water from two carboxylic acid molecules. They are characterized by the presence of a carbon-oxygen-oxygen-carbon (C-O-O-C) linkage. Acid anhydrides are commonly used in organic synthesis reactions and are known for their reactivity.Rate this question:
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- 18.
Name the functional group
- A.
Benzene
- B.
Aldehyde
- C.
Cycloalkene
- D.
Ester
Correct Answer
A. BenzeneExplanation
The given correct answer is "benzene." Benzene is a functional group that consists of a ring of six carbon atoms with alternating single and double bonds. It is a highly stable aromatic compound commonly found in many organic compounds.Rate this question:
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- 19.
Name the functional group
- A.
Ester
- B.
Ether
- C.
Carboxylic acid
- D.
Acid anhydride
Correct Answer
C. Carboxylic acidExplanation
The functional group present in the compound is a carboxylic acid. Carboxylic acids are characterized by the presence of a carboxyl group, which consists of a carbonyl group (C=O) and a hydroxyl group (-OH) attached to the same carbon atom. In the given options, only "carboxylic acid" corresponds to this functional group. Esters have a carbonyl group and an alkyl group attached to an oxygen atom, ethers have two alkyl or aryl groups attached to an oxygen atom, and acid anhydrides have two carbonyl groups attached to an oxygen atom.Rate this question:
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- 20.
Name the functional group
- A.
Alkane
- B.
Primary alcohol
- C.
Alkene
- D.
Phenol
Correct Answer
C. AlkeneExplanation
The correct answer is alkene. An alkene is a type of hydrocarbon that contains a carbon-carbon double bond. It is characterized by the presence of unsaturation, which means it has fewer hydrogen atoms than the corresponding alkane. Alkenes are highly reactive and can undergo addition reactions to form new compounds.Rate this question:
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- 21.
Name the functional group
- A.
Acyl chloride
- B.
Acid anhydride
- C.
Alkene
- D.
Tertiary alcohol
Correct Answer
A. Acyl chlorideExplanation
The correct answer is acyl chloride. Acyl chloride is a functional group that consists of an acyl group (a carbonyl group attached to a carbon atom) bonded to a chlorine atom. It is also known as an acid chloride and is commonly used in organic synthesis reactions. It is characterized by its reactivity and ability to undergo nucleophilic substitution reactions.Rate this question:
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- 22.
Name the functional group
- A.
Acyl chloride
- B.
Acid anhydride
- C.
Alkane
- D.
Secondary alcohol
Correct Answer
A. Acyl chlorideExplanation
An acyl chloride is a functional group that consists of a carbonyl group (C=O) bonded to a chlorine atom (Cl). It is also known as an acid chloride. This functional group is commonly found in organic compounds and is highly reactive. Acyl chlorides are used in various chemical reactions, such as the formation of esters and amides. They can be identified by the suffix "-oyl chloride" in their systematic names.Rate this question:
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- 23.
Name the functional group
- A.
Tertiary alcohol
- B.
Secondary alcohol
- C.
Alkane
- D.
Primary alcohol
Correct Answer
C. AlkaneExplanation
The given functional group is alkane. Alkanes are hydrocarbons that consist of only single bonds between carbon atoms and are saturated compounds. They are characterized by the general formula CnH2n+2. In this case, the term "tertiary alcohol," "secondary alcohol," and "primary alcohol" refer to different types of alcohols, which contain the functional group -OH attached to a carbon atom. However, the term "alkane" refers to a different type of compound that does not contain the -OH functional group. Therefore, the correct answer is alkane.Rate this question:
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Apr 21, 2023Quiz Edited by
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Apr 21, 2020Quiz Created by
Cosmina Fedescu
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