A) Propan-1-ol < butan-2-ol < butan-1-ol < pentan-1-ol
B) Propan-1-ol < butan-1-ol < butan-2-ol < pentan-1-ol
C) Pentan-1-ol < butan-2-ol < butan-1-ol < propan-1-ol
D) Pentan-1-ol < butan-1-ol < butan-2-ol < propan-1-ol
Correct Answer: A
Solution :
The boiling point increases as the molecular mass of the alcohol increases. Further, among isomeric alcohols, \[1{}^\circ \]alcohols have higher boiling points than \[2{}^\circ \] alcohols. Therefore, the b.pt. increases in the order: propan-1-ol < butan-2-ol < butan-1-ol < pentan-1-ol.
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