Structural isomerism

Which of the following best defines structural isomerism?

• Compounds with the same molecular formula but different spatial arrangements
• Compounds with the same molecular formula but different connectivity of atoms
• Compounds with different molecular formulas but similar physical properties
• Compounds that are mirror images of each other

Which of the following is NOT a type of structural isomerism?

• Chain isomerism
• Positional isomerism
• Tautomeric isomerism
• Geometrical isomerism

Which of the following pairs represents chain isomers?

• Butane and Isobutane
• Ethanol and Dimethyl ether
• 1-Butanol and 2-Butanol
• Benzene and Cyclohexane

Which type of structural isomerism exists between 1-Propanol and 2-Propanol?

• Chain isomerism
• Functional group isomerism
• Position isomerism
• Tautomerism

Which of the following compounds exhibits functional group isomerism?

• 1-Pentene and 2-Pentene
• Propanal and Propanone
• Butane and Cyclobutane
• Benzene and Toluene

Which structural isomerism is observed between pentan-1-ol and methoxybutane?

• Functional group isomerism
• Chain isomerism
• Position isomerism
• Tautomerism

How many chain isomers exist for the molecular formula C5H12?

• 2
• 3
• 4
• 5

Which pair represents positional isomers?

• Ethanol and Ethanoic acid
• 1-Bromo-2-methylpropane and 2-Bromo-2-methylpropane
• Pentan-1-amine and Pentan-2-amine
• Both b and c

Which of the following compounds are functional isomers of each other?

• Ethanol and methoxymethane

• Propanal and Propanone
• Butanal and Butanone
• All of the above

Which of the following pairs of compounds does NOT exhibit structural isomerism?

• Dimethyl ether and Ethanol
• 1-Propanol and 2-Propanol
• Methanal and Ethanal
• Butane and 2-Methylpropane