Asked in Premeth Test 15 — Organic Chemistry Concepts and Hydrocarbons (17 March 2025) 2025Moderate

Dimethyl ether and ethyl alcohol are examples of ...................isomerism

Correct answer: C. Functional group

  • A. Position
  • B. Chain
  • C. Functional group
  • D. Metamers

Explanation

Functional group Functional Isomerism is the type of isomerism formed by compounds that have same molecular formula but different functional groups. Dimethyl ether and ethanol are said to be isomers that they are different compounds with different functional groups (the -O- ether group and the -OH- alcohol group). Position isomers are constitutional isomers with the same carbon skeleton and will have the same functional group. They differ from each other in the position of the functional groups on the carbon chain. Chain isomerism are the type of isomerism in which moleculer formula is the same but the arrangement of the carbon chain is different. Metamerism are the isomerism having the same molecular formula but different alkyl groups on two sides of functional groups. Reference:Sindh textbook

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About Isomerism

Isomerism occurs when compounds have the same molecular formula but different atom arrangements or spatial orientations. The content includes chain, position, functional, metameric and tautomeric isomerism, along with geometrical and optical isomerism, including cis-trans forms, E/Z notation, chirality and enantiomers.

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