Solve que 12.

​Q12. For the reaction A $\to$B, the rate law expression is – $\frac{\mathrm{d}\left[\mathrm{A}\right]}{\mathrm{dt}}$= k [A]^1/2. If initial concentration of A is [A]₀, then 
            (A) The integerated rate expression is k = $\frac{2}{\mathrm{t}}$ $\left({\mathrm{A}}_{{}_0}^{\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$2$}\right.}-{\mathrm{A}}^{\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$2$}\right.}\right)$

            (B) The graph of $\sqrt{\mathrm{A}}$ Vs t will be 
                    

         (C) The half life period t_{1 /2} = $\frac{\mathrm{K}}{2{\left[\mathrm{A}\right]}_0^{\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$2$}\right.}}$

          (D) The time taken for 75% completion of reaction t_3/4 = $\frac{\sqrt{{\left[\mathrm{A}\right]}_0}}{\mathrm{K}}$