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Which is the correct increasing order of boiling points of the following compounds ?
1-bromoethane, 1-bromobutane, 1-bromopropane, 1-bromobenzene
A. Butane `lt` 1-Chlorobutane `lt` 1-Bromobutane `lt`1-Iodobutane
B. 1-Iodobutane `lt`1-Bromobutane `lt` 1-Chlorobutane `lt` Butane
C. Butane `lt` 1-Iodobutane `lt` 1-Bromobutane
`lt` 1-Chlorobutane
D. Butane `lt`1-Chlorobutane `lt` 1-Iodobutane
`lt`1-Bromobutane.

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Correct Answer - A
It is the correct increasing order of boiling points. For the same alkyl group `(C_(4)H_(9)-)` boiling point increases with the increase in the size of halogen atom.

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