8.1. Aldehydes and ketones — Chemistry STD 12 Science — Question

${B^{3 + }}_{(aq.)} + 3{e^ - } \to B(s)$  ; $E = 0.6\ Volt$

Using above information find the ion which will be deposited first at cathode if solution containing $A_{(aq.)}^{2 + }$ & $B_{(aq.)}^{ 3+ }$ is electrolysed

Assertion $(A)$ : Experimental reaction of $CH _{3} Cl$ with aniline and anhydrous $AlCl _{3}$ does not give $o$ and $p-methylaniline$.

Reason $(R)$ : The - $NH _{2}$ group of aniline becomes deactivating because of salt formation with anhydrous $AlCl _{3}$ and hence yields $m$-methyl aniline as the product.

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