The arrangement of following compounds :
i. bromomethane ii.bromoform
iii. Chloromethane iv. Dibromomethane
In the increasing order of their boiling point is

Options

A. `iltii lt iii lt iv`
B. `iilt iiiltilt iv`
C. `iv lt iii ltilt ii`
D. `iii ltiltivlt ii`

Answer

D

Explanation

The inter molecular forces of attaction become stronger with the increase in size of the molecules.
Hence the order of boiling points will be
`CH_3 Cl lt CH_3Br lt CH_3Br_2 lt CH_3Br_3`.