Question

Given below are two statements: Statement (I) :

are isomeric compounds. Statement (II) :

are functional group isomers.

Answer 1

Statement (I) is false. Statement (II) is true.

Answer 2

Statement (I): The first compound, methylcyclopentane, has the molecular formula C6H12. The second compound, pent-2-ene, has the molecular formula C5H10. Since their molecular formulas are different, they are not isomeric compounds. Therefore, Statement (I) is false.

Statement (II): The first compound is butan-1-amine (CH3CH2CH2CH2NH2), which is a primary amine with the molecular formula C4H11N. The second compound is diethylamine (CH3CH2NHCH2CH3), which is a secondary amine with the molecular formula C4H11N. Both compounds have the same molecular formula but different functional groups (primary amine vs. secondary amine). Hence, they are functional group isomers. Therefore, Statement (II) is true.