Order of boiling point: n-pentane>Iso-pentane>Neo-pentane. HOW?

Arrange the following in the decreasing order of boiling points (i)n-Pentane (ii) Iso-pentane (iii) Neo-pentane

Arrange the following compounds in the descending order of their boiling points a) n- pentane b ) isopentane c) neo pentane

Decreasing order of boiling points of n-Petanol (A), n-Pentane (B), Pentan-3-ol(C) and 2,2-Dimethylpropanol (D) is ________

neo Pentane and iso pentane are