Which type of compounds generally do not exhibit functional isomerism?

• Alkanes

• Alcohols

• Alkenes

• Cycloalkanes

What is the main difference between 1-propane and cyclopropane that makes them functional isomers?

• Presence of a triple bond

• Different number of carbon atoms

• Presence of a double bond

• Different molecular formulas

Which of the following pairs are functional isomers due to the presence of different functional groups?

• Ethene and ethyne

• Propane and butane

• Ethanol and methoxy methane

• Methanol and ethanol

Which functional group is present in aldehydes that differentiates them from ketones?

• Keto group

• Hydroxyl group

• Carboxyl group

• Aldehyde group

What type of isomerism involves changes in the distribution of carbon atoms among alkyl groups?

• Positional isomerism

• Chain isomerism

• Functional isomerism

• Metamerism

In which type of compounds is metamerism primarily observed?

• Aldehydes

• Ethers

• Alcohols

• Alkanes

What is required for a compound to exhibit metamerism?

• At least 3 carbon atoms

• At least 5 carbon atoms

• At least 2 carbon atoms

• At least 4 carbon atoms