Free Functional Groups MCQs with Answers
49 Functional Groups MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Functional groups are specific atoms or atom groups that determine the characteristic reactions and properties of organic compounds. Coverage includes alkenes, alkynes, halo, hydroxyl, ether, carbonyl, carboxyl, ester, amino and nitro groups, together with their structures, nomenclature and related homologous series.
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49 questions · page 2 of 3
- A. 2-Ethanoic acid
- B. 2-Ethanoate
- C. Diethyl ether
- D. 2-Diethanol
Explanation: Diethyl ether is a colorless, volatile, and highly flammable liquid that is commonly used as a solvent in organic chemistry.
Correct answer: Diethyl ether- A. Ethers
- B. Aldehydes
- C. Ketones
- D. Esters
Explanation: Ethers do not contain a double bond in their functional group. The functional group of ether is an oxygen atom that is bonded to two alkyl…
Correct answer: Ethers- A. Benzene and acetone
- B. Benzene and CS2
- C. Ethyl acetate and CS2
- D. Acetone and ethyl acetate
Explanation: Ketonic group is present in camphor and methone which is used in cosmetics and fragrances.Hence, acetone is used in nail polish remover…
Correct answer: Acetone and ethyl acetate- A. Homologous series
- B. Functional group
- C. Chemical bonding
- D. Ionic complex
Explanation: Functional group is a group of atoms responsible for the characteristic reactions of a particular compound.
Correct answer: Functional group- A. -COOH
- B. -OH
- C. -CONH2
- D. -CHO
Explanation: The functional group that defines a carboxylic acid is the carboxyl group.
Correct answer: -COOH- A. 2-phenyl ethanamine
- B. 2-phenyl ethanamide
- C. 2-phenyl ethenamine
- D. 3-phenyl ethanamine
Explanation: The compound C6H5−CH2−CH2−NH2 is an amine. The parent hydrocarbon is ethane.
Correct answer: 2-phenyl ethanamine- A. R-O-R'
- B. (Cn + H2n+1) CO
- C. CnH2n+1CHO
- D. (Cn H2n+1 COOCn H2n+1)
Explanation: The correct answer is Option A: R-O-R'. Ethers are characterized by an oxygen atom bonded to two alkyl or aryl groups, symbolized by R and…
Correct answer: R-O-R'- A. -SH
- B. -COOH
- C. -CN
- D. -COOR
Explanation: The name "cyano" comes from the Greek word "κυανος," which means "dark blue." This is because cyanides, which are compounds that contain…
Correct answer: -CN- A. (NH2)2CO
- B. NH2CH3
- C. C6H5NH2
- D. N(CH3)3
Explanation: Urea is organic compound which belongs to amide class
Correct answer: (NH2)2CO- A. Carbonyl dichloride
- B. Phosphoryl chloride
- C. Carbon tetrachloride
- D. C2O & PH3
Explanation: a) Carbonyl dichloride:Phosgene is commonly known as carbonyl dichloride. Its chemical formula is COCl2.
Correct answer: Carbonyl dichloride- A. Alcohols
- B. Ketones
- C. Carboxylic Acid
- D. Ethers
Explanation: The general formula CnH2nO2 is for carboxylic acids and esters.
Correct answer: Carboxylic Acid- A. RCOR
- B. RCOOR
- C. RCHO
- D. RCOOH
Explanation: The general formula for aldehydes is RCHO, where R represents an organic group.
Correct answer: RCHO- A. Functional groups
- B. Homologous series
- C. Alkane
- D. Atoms
Explanation: Functional groups are groups of atoms in a compound, that determine the chemical behavior of the compound and gives specific properties to…
Correct answer: Functional groups- A. NH4CNO
- B. NH2COCH3
- C. NH2CONH2
- D. NH2COONH
Explanation: OPTION A: NH4CNO is not an amide because it contains a nitrogen atom bound to hydrogen, not to a carbonyl group (C=O).OPTION B: Amides are…
Correct answer: NH2COCH3- A. Aldehyde
- B. Alcohol
- C. Esters
- D. Ketones
Explanation: d) Ketones This option is correct. While Camphor contains a ketone functional group, Menthone contains a ketone group, not a ketone.
Correct answer: Ketones- A. Functional groups
- B. Homologous series
- C. Alkane
- D. Atoms
Explanation: A functional group is an atom or a group of "atoms" that give specific physical and chemical properties to the organic compounds…
Correct answer: Functional groups- A. Cu2Cl2 and NH4Cl
- B. Al2O3 and NH4Cl
- C. Cu2Cl2 and NH4OH
- D. Cu2Cl2 and Al2O3
Explanation: A is correct since Cu2Cl2 and NH4Cl is used as catalyst for preparation of acrylonitrileB is incorrect because Al2O3 and NH4Cl is not act…
Correct answer: Cu2Cl2 and NH4Cl- A. Nucleophile
- B. Electrophile
- C. Protophile
- D. None of the given options
Explanation: Nucleophiles contain an unshared pair of electrons, and they look for a positive 'centre' to bond with.
Correct answer: Nucleophile- A. Cyano compounds
- B. Nitro compounds
- C. Carbon nitrogen compounds
- D. Nitriles
Explanation: In organic chemistry compounds which contain CN are called nitriles such as CH3CH2CN is called ethanenitrile.
Correct answer: Nitriles- A. 2-aminopropanoic acid
- B. 2-aminoethanoice acid
- C. 2-aminobutane-1,4-dioic acid
- D. 2-aminobutanoic acid
Explanation: The IUPAC name of Alanine is 2-aminopropanoic acid since the amino group is bonded to carbon number 2 and the longest chain is of 5 carbons.
Correct answer: 2-aminopropanoic acid