1.

Which one of the following has the lowest boiling point ?

Answer»

`CH_2Cl`
`C_2H_5Cl`
`C_2H_5Br`
`C_2H_5I`

Solution :ORDER of B.P.. s:
`R - F lr R - CL lt R lt Br lt R - I`
If M.wt. INCREASES, MOLECULAR attraction also increases


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