Arrange the following compounds in increasing order of their boiling points.
$(i) C H_{3} C H_{2} C H_{2} C H O$ $(i i) C H_{3} C H_{2} C H_{2} C H_{2} O H$ $(i i i) C_{2} H_{5} O C_{2} H_{5}$ $(i v) C H_{3} C H_{2} C H_{2} C H_{3}$

(i) > (i i) > (i i i) > (i v)

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(i i) > (i) > (i i i) > (i v)

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(i v) > (i) > (i i) > (i i i)

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(i i i) > (i) > (i i) > (i v)

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Solution

The correct option is B $(i i) > (i) > (i i i) > (i v)$
The boiling points are given in the order of Alkanes $<$ Esters $<$ Aldehydes $<$ Alcohols.
Alcohols have higher possibility of hydrogen bonding.
Hence, this is the increasing order corresponding functions groups boiling points.
$C H_{3} C H_{2} C H_{2} C H_{2} O H > C H_{3} C H_{2} C H_{2} C H O > C_{2} H_{5} O C_{2} H_{5} > C H_{3} C H_{2} C H_{2} C H_{3}$ .

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