JEE Main Chemistry question

Chemistry Organic Chemistry - Some Basic Principles and Techniques JEE Main

The number of structural isomers possible for an organic compound with molecular formula C₅H₁₂ is

(A)5
(B)3Correct
(C)4
(D)2

Answer: (B)

Solution

C₅H₁₂ (pentane) has exactly 3 structural isomers: n-pentane, 2-methylbutane (isopentane), and 2,2-dimethylpropane (neopentane).

Question ID VK-139623