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Functional Groups in Organic Chemistry

Browse CurlyArrows tutorials on functional groups in organic chemistry — what they are, how to identify them, how they are classified (carbon-only, carbon-heteroatom single bond, carbon-heteroatom multiple bonds), IUPAC nomenclature rules for polyfunctional compounds, and how functional groups determine chemical reactivity and physical properties.

11 resources 2 content types Updated October 2025

Short Answer Question

The longest carbon chain is the parent chain containing the principal functional group. 

IUPAC, an international body engaged in developing standards for naming chemical elements and compounds, has laid several rules known as 'IUPAC rules' to

Organic compounds predominantly consist of Carbon and Hydrogen atoms, also known as hydrocarbons.

Carbon's nondiscriminatory nature to form bonds with itself and other elements has led to a wide variety of small and large organic compounds.

The functional group is the agent providing a molecule its quintessential character and is responsible for molecular reactivity.

Among the isomeric alkanes of molecular formula C5H12, identify the one that on photochemical chlorination yields

i) A single monochloride

ii) Three isomeric monochlorides

Ethanal is a two-carbon aldehyde, and propanone is a three-carbon ketone.

Question- A and B are two functional isomers of compound C3H6O.

An Organic Compound 'A' molecular formula C8H16O2 was hydrolyzed with dilute H2SO4 to give a carboxylic acid 'B' a

numericals

A hydrocarbon C5H10 does not react with Chlorine in dark but it gives a single monochlorocompound C5H9Cl in bright sunlight.

Question- An organic compound X contains 70% Carbon, 11.33% Hydrogen and 18.67% Oxygen. The molecular weight of the compound is 86.