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 4 of 6
- A. Aromatic
- B. Heterocyclic
- C. Non-benzenoid
- D. Aliphatic
Explanation: Heterocyclic compounds are cyclic compounds in which one or more of the ring atoms are elements other than carbon.
Correct answer: Heterocyclic- A. Saturated
- B. Unsaturated
- C. Alkenes
- D. Alkynes
Explanation: A saturated organic compound is one in which all the carbon atoms are bonded to the maximum possible number of other atoms (four) via…
Correct answer: Saturated- A. Monodentate
- B. Bidentate
- C. Polydentate
- D. Tridentate
- E. None of the above
Explanation: The explanation for this question will be added soon.
Correct answer: Polydentate- A. Rancidification value
- B. Saponification value
- C. Acid Value
- D. Iodine Value
Explanation: The explanation for this question will be added soon.
Correct answer: Rancidification value- A. Alicyclic and Aromatic
- B. Open chain and branched chain
- C. Aromatic and non-aromatic
- D. Antiaromatic and antialicyclic
Explanation: They are divided into alicylic and aromatic.
Correct answer: Alicyclic and Aromatic- A. CH2 = CH2
- B. CH3 - O - CH3
- C. CH3 - NH2
- D. C6H6
Explanation: Aromatic compounds are also called arenes and the only correct option showing a benzene ring / aromatic compound is option D.
Correct answer: C6H6- A. Animals
- B. Plants
- C. Bacteria
- D. All of these
Explanation: Option A: According to the vital force theory, animals were considered to possess a vital force or vital principle that enabled them to…
Correct answer: All of these- A. Arrangement of atoms in the compound
- B. Arrangement of electrons in the compound
- C. Arrangement of orbitals that are involved in bonding
- D. Lewis structure of compounds
Explanation: Option A: Arrangement of atoms in the compound: This option refers to the structural formula's main purpose, which is to depict the…
Correct answer: Arrangement of atoms in the compound- A. Candle wax
- B. Kerosine oil
- C. Paraffin oil
- D. Vegetable ghee
Explanation: Candle wax is typically made from natural waxes, such as beeswax or plant-based waxes like soy wax or palm wax, or synthetic waxes like…
Correct answer: Vegetable ghee- A. Inorganic
- B. Polar
- C. Ionic
- D. Non-polar
Explanation: The electronegativity of carbon is 2.55 and of hydrogen is 2.2, the difference between them is 0.33.
Correct answer: Non-polar- A. Hydrogen
- B. Oxygen
- C. Carbon
- D. Both Hydrogen and Carbon
Explanation: Hydrocarbons, as the name suggests, consist of "carbon" and "hydrogen" both.
Correct answer: Both Hydrogen and Carbon- A. Ionic
- B. Non-ionic
- C. Non-covalent.
- D. Covalent
Explanation: Organic compounds are covalent in nature. This means that the atoms in organic compounds are held together by covalent bonds, which are…
Correct answer: Covalent- A. Volatile
- B. Non-volatile
- C. Fissible
- D. None of these options are correct
Explanation: Volatile organic compounds (VOCs) are organic chemicals (containing Carbon) that have a high vapor pressure at room temperature.
Correct answer: Volatile- A. CH3
- B. CH2
- C. CH
- D. CH4
Explanation: CH4, C2H6, and C3H8 are all consecutive alkanes in the homologous series, each differing from the next and previous compound by the…
Correct answer: CH2- A. Wohler
- B. Berzelius
- C. Kesley
- D. Lyll
Explanation: According to the vital source theory, organic compounds must have their origin in living organisms and could not be synthesized by…
Correct answer: Berzelius- A. Class
- B. Group
- C. Homologous series
- D. None of these options are correct
Explanation: Compounds that have the same functional group are part of the same homologous series. Eg: alcohol (OH) has the same homologous series.
Correct answer: Homologous series- A. Closed chain hydrocarbons
- B. Open chain hydrocarbons
- C. Ring compounds
- D. Alicyclic compounds
Explanation: OPTION A: Closed-chain hydrocarbons are also called cyclic or alicyclic hydrocarbons.
Correct answer: Open chain hydrocarbons- A. Lewis
- B. Wohler
- C. Greek Philosophers
- D. Berzillus
Explanation: The vital force theory stated that organic compounds could not be made in a lab, but needed a mysterious, God-given power that was found…
Correct answer: Wohler- A. Imides
- B. Amides
- C. Amines
- D. Carboxylic acid
Explanation: Option A : Urea doesn't belong to imides. Option: B Urea, also called carbamide, is an organic compound with the chemical formula…
Correct answer: Amides- A. Amino acids
- B. Ammonium carbonate
- C. Ammonium cyanate
- D. Xanthin
Explanation: The 'Wöhler synthesis' is the conversion of ammonium cyanate into urea. This chemical reaction was described in 1828 by Friedrich Wöhler.
Correct answer: Ammonium cyanate