Complete the following reactions:
$(i)$ $C_{6}H_{5}NH_{2} + CHCl_{3} +$ alc. $KOH \rightarrow$
$(ii)$ $C_{6}H_{5}N_{2}Cl + H_{3}PO_{2} + H_{2}O \rightarrow$
$(iii)$ $C_{6}H_{5}NH_{2} + H_{2}SO_{4}$ (conc.) $\rightarrow$
$(iv)$ $C_{6}H_{5}N_{2}Cl + C_{2}H_{5}OH \rightarrow$
$(v)$ $C_{6}H_{5}NH_{2} + Br_{2(aq)} \rightarrow$
$(vi)$ $C_{6}H_{5}NH_{2} + (CH_{3}CO)_{2}O \rightarrow$
$(vii)$ $C_{6}H_{5}N_{2}Cl \xrightarrow[(ii) NaNO_{2}/Cu, \Delta ]{(i) HBF_{4}}$

(N/A) $(i)$ $\underset{\text{Aniline}}{C_{6}H_{5}NH_{2}} + CHCl_{3} + 3 \text{ alc. } KOH$ $\xrightarrow{\text{Carbylamine reaction}} 3H_{2}O + 3KCl + \underset{\text{Phenyl isocyanide}}{C_{6}H_{5}NC}$
$(ii)$ $\underset{\text{Benzenediazonium chloride}}{C_{6}H_{5}N_{2}Cl} + H_{3}PO_{2} + H_{2}O$ $\rightarrow \underset{\text{Benzene}}{C_{6}H_{6}} + N_{2} + H_{3}PO_{3} + HCl$
$(iii)$ $\underset{\text{Aniline}}{C_{6}H_{5}NH_{2}} + \text{conc. } H_{2}SO_{4}$ $\rightarrow \underset{\text{Anilinium hydrogen sulphate}}{C_{6}H_{5}NH_{3}^{+}HSO_{4}^{-}}$
$(iv)$ $\underset{\text{Benzenediazonium chloride}}{C_{6}H_{5}N_{2}Cl} + \underset{\text{Ethanol}}{C_{2}H_{5}OH}$ $\rightarrow \underset{\text{Benzene}}{C_{6}H_{6}} + \underset{\text{Ethanal}}{CH_{3}CHO} + N_{2} + HCl$
$(v)$ $C_{6}H_{5}NH_{2} + 3Br_{2(aq)} \rightarrow \text{2,4,6-Tribromoaniline} + 3HBr$
$(vi)$ $\underset{\text{Aniline}}{C_{6}H_{5}NH_{2}} + \underset{\text{acetic anhydride}}{(CH_{3}CO)_{2}O}$ $\rightarrow \underset{\text{N-Phenylethanamide}}{C_{6}H_{5}NHCOCH_{3}} + \underset{\text{acetic acid}}{CH_{3}COOH}$
$(vii)$ $\underset{\text{Benzenediazonium chloride}}{C_{6}H_{5}N_{2}Cl}$ $\xrightarrow[(ii) NaNO_{2}/Cu, \Delta ]{(i) HBF_{4}} \underset{\text{Nitrobenzene}}{C_{6}H_{5}NO_{2}} + N_{2} + NaBF_{4}$