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 3 of 3
- A. Secondary alcohol, nitrile, and phenol ring
- B. Secondary alcohol, amine, and benzene ring
- C. Secondary alcohol, nitrile, and aryl ring
- D. Primary alcohol, nitrile, and benzene ring
Explanation: The functional groups are: secondary alcohol, nitrile, and benzene/aryl ring.Option A incorrectly mentions phenol as there is no hydroxyl…
Correct answer: Secondary alcohol, nitrile, and aryl ring- A. Primary amines
- B. Secondary amines
- C. Tertiary amines
- D. All of these
Explanation: Only primary amines give the carbylamine test. Hoffmann's carbylamine test/ Isocyanide test:Aliphatic or aromatic primary amines on…
Correct answer: Primary amines- A. They are highly reactive compounds.
- B. They are very stable compounds and can be isolated easily.
- C. They have synthetic importance.
- D. They are represented by the general formula RMgX.
Explanation: The correct answer is They are very stable compounds and can be isolated easily.
Correct answer: They are very stable compounds and can be isolated easily.- A. Carbocation
- B. Oxonium ion
- C. Carbanion
- D. Oxalate ion
Explanation: When ethoxy ethane is treated with concentrated H2SO4, the oxygen atom in ethoxy ethane donates a lone pair to the hydrogen ion from the…
Correct answer: Oxonium ion- A. CH3-CH2-C-Br
- B. CH3-C-O-C- CH3
- C. CH3- CH2-C-NH2
- D. None of the above
Explanation: All of the above compounds can be hydrolyzed by water to split into 2 smaller molecules so option D is correct
Correct answer: None of the above- A. R-S-R
- B. R-S-H
- C. R-O-R
- D. R-O-H
Explanation: Mercaptans are organosulfur molecules composed of carbon, hydrogen, and sulfur.
Correct answer: R-S-H- A. Methyl amine
- B. Dimethyl amine
- C. Methyl propyl amine
- D. Butyl amine
Explanation: The greater the basicity of amines the higher its reactivity. Order of basicity if the −R group is −CH3 group:Secondary amine > primary…
Correct answer: Dimethyl amine- A. Br+
- B. AlCl3
- C. NH4
- D. NO3+
Explanation: Ammonium ion (NH4+) is not an electrophile. It is a positively charged species, but it does not have an electron-deficient center that can…
Correct answer: NH4- A. Propyne
- B. Propanone
- C. Propanal
- D. Propene
Explanation: Nail polish removers are mainly composed of propanone, which is more commonly known as acetone.
Correct answer: Propanone