rate of `S_(N^(2))` reaction is:

Rate of S_(N^(1)) reaction is :

The rate of S_(N^(1)) reaction is fastest with :

Increasing rate of S_(N^(1)) reaction in the following compounds is

Increasing rate of S_(N^(1)) reaction in the following compounds is

When the concentration of alkyl halide is triple and concentration of overset(Θ)OH is reduced to half, the rate of S_(N^(2)) reaction increased by :

When the concentration of alkyl halide is triple and concentration of overset(Θ)OH is reduced to half, the rate of S_(N^(2)) reaction increased by :

The rate of S_N2 reaction is maximum when the solvent is

Select the member of each pair that shows rate of S_(N)2 reaction with KI in acetone.