Which of the following statement is incorrect for biomolecular nucleophilic substitution reaction `(S_(N^(2))`

Options

A. It is a second order reaction
B. In `S_(N^2)` reaction the substrate does not undergo heterolytic fission
C. The rate of `S_(N^2)` reaction does not depends on concentrations of both substrate and nucleophilic reagent
D. `S_(N^2)` reaction occurs in single step without forming intermediate

Answer

C

Explanation

In `S_(N^2)` reaction
Rate of reaction depends upon the concentration of both substrate and reagent. Hence order of reaction , =2 and it is bimolecular nucleophilic addition reaction
`underset("Substrate") (CH_(3)) - Cl + aq.underset("Reagent")( KOH) to CH_(3) - Cl + K^(+) + OH^(-)`