6. Haloalkanes and Haloarenes — Chemistry STD 12 Science — Question

$(I)$ Mond's process for purification of nickel
$(II)$ Removal of unreacted $AgBr$ from photographic plate
$(III)$ Removal of lead poisoning from the body

$I$ $-$ $II$  $-$ $III$

Reason $(R)$: $\left[\mathrm{Co}(\mathrm{en})_2 \mathrm{Cl}_2\right]^{+}$complex ion has an octahedral geometry.

In the light of the above statements, choose the most appropriate answer from the options given below :

$(A)$ $\Lambda \stackrel{0}{ m }$ for electrolyte $A$ is obtained by extrapolation

$(B)$ For electrolyte B, vx $\Lambda m$ vs $\sqrt{ c }$ graph is a straight line with intercept equal to $\Lambda \stackrel{0}{ m }$

$(C)$ At infinite dilution, the value of degree of dissociation approach zero for electrolyte $B$.

$(D)$ $\Lambda \stackrel{0}{ m }$ for any electrolyte $A$ or $B$ can be calculated using $\lambda^{\circ}$ for individual ions.