How many organic compounds are known _ ?
Correct answer: B. Over 6 million
- A. 850,000
- B. Over 6 million
- C. 6 million
- D. 5 million
Explanation
Option B is correct as we know an estimated "20 million" different organic compounds.
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About Classification of Organic Compounds
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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