STANDARDChemistry-Organic Chemistry
STANDARD Chemistry Alkanes MCQ Question
Type: MCQ-conceptual-Medium
Which of the following has the lowest boiling point?
A
2-Methylbutane
B
2-Methylpropane
C
2,2-Dimethylpropane
D
n-Pentane
Correct Answer
Option B
Detailed Explanation
For the compounds with the same molecular mass, boiling point decreases with an increase in branching. Boiling point also increases with an increase in molecular mass. 2-Methylpropane has the lowest molecular mass among all of the given compounds. Thus, 2-Methylpropane has the lowest boiling point among the given options.
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