JEE Main Chemistry question

The highest boiling point is expected for

(A)*iso*-octane
(B)-pentane
(C)2,2,3,3-tetramethylbutaneCorrect
(D)-butane

Answer: (C)

Solution

Boiling point normally falls with branching (less surface contact) for molecules of similar shape, but a highly symmetric, globular, compact branched molecule such as 2,2,3,3-tetramethylbutane (hexamethylethane) can pack unusually efficiently

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Question ID VK-142356