Correct Answer - `n=2`
Let number of phenol molecules undergoing polymerisation `=n`
`therefore i=[1+(y-1)x]=[1+((1)/(n)-1)x]`
`=1+((1)/(n)-1)` since, `x=1`
`i=(1)/(n)`
`DeltaT_(f)=1000K_(f)(w_(1))/(m_(1)w_(2))(i)`
`0.93=1000xx(1.86xx9.4)/(94xx100)` (i)
`i=(1)/(2)=(1)/(n)`
`therefore n=2`