The increasing order of reduction of alkyl halides with zinc and dilute HCl is

Options

A. `R-Cl lt R-I lt R-Br`
B. `R-Cl lt R- Br lt R-I`
C. `R-I lt R- Br lt R- Cl`
D. `R- Br lt R-I lt R-Cl`

Answer

B

Explanation

The reactivity of halogens with alkane is `F_(2) gt Cl_(2) gt Br_(2) gt I_(2)` hence, reduction of alkyl halide with Zna nd dilute HCl follows reverse order i.e., R-IgtR-BrgtR-Cl. Further the reactivty of this reduction increases as the strength of C-X bond decreases.