Hydrocarbons - Result Question 15

15. The compound with highest boiling point is

(1982,1 M)

(a) $2$-methyl butane

(b) $n$-pentane

(c) $2, 2$-dimethyl propane

(d) $n$-hexane

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Answer:

Correct Answer: 15. (d)

Solution:

  1. Among alkanes, boiling point increases with molar mass. Among isomeric alkanes, branching decreases boiling point. Therefore, $n$-hexane has highest boiling point among these.