Free Classification of Organic Compounds MCQs with Answers
108 Classification of Organic Compounds MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Organic compounds are classified by carbon skeleton into open-chain, branched-chain and cyclic compounds, including homocyclic and heterocyclic types. The classification also uses functional groups to distinguish hydrocarbons, halo compounds, alcohols, aldehydes, ketones, carboxylic acids and their derivatives, which is different from naming compounds by IUPAC rules.
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108 questions · page 6 of 6
- A. Multiple bonds
- B. Hybridization
- C. Long chain or rings of carbon atom
- D. Showing isomerism
Explanation: C (long chain or rings of carbon atom) is the correct answer as it specifically describes the process of catenation, where carbon atoms…
Correct answer: Long chain or rings of carbon atom- A. (H₂N)2CO
- B. NH4CNO
- C. CH₂NO₂
- D. CH4
Explanation: The correct answer is ammonium cyanate (NH4CNO), which is not considered an organic compound as it lacks carbon-hydrogen (C-H) bonds, a…
Correct answer: NH4CNO- A. 2 Hydrogens
- B. 2 Carbons
- C. 3 Carbons
- D. 4 Carbons
Explanation: A tertiary carbon is a carbon atom bonded directly to three other carbon atoms.
Correct answer: 3 Carbons- A. Electrophilic addition
- B. Electrophilic substitutions
- C. Free radical substitutions
- D. All are possible
Explanation: Chemical reactions associated with hydrocarbons are:Electrophilic addition, Electrophilic substitutions, Free radical substitutions.
Correct answer: All are possible- A. Natural gas
- B. Petroleum
- C. Coal
- D. Ammoniacal Liquor
Explanation: Ammoniacal liquor is an organic compound. It is a concentrated solution of ammonia, ammonium compounds, and sulfur compounds, obtained as…
Correct answer: Ammoniacal Liquor- A. Homocyclic compounds
- B. Heterocyclic compounds
- C. Alicyclic compound
- D. Aromatic homocyclic compounds
Explanation: Thiophene is indeed a heterocyclic compound. It consists of a ring structure made up of four carbon atoms and one sulfur atom.
Correct answer: Heterocyclic compounds- A. Peat
- B. Urea
- C. Sugar
- D. Alcohol
Explanation: The first organic compound prepared in the laboratory was urea. Urea was synthesized by Friedrich Wöhler in 1828 from inorganic starting…
Correct answer: Urea- A. Hydrocarbons
- B. Homocyclic
- C. Alicyclic
- D. Heterocyclic
Explanation: Pyrole is a heterocyclic compound. Heterocyclic compounds are organic compounds with a ring structure that contains in the cycle at least…
Correct answer: Heterocyclic