Comlete the following reactions :
i.` C_2 H_5 NH_2 + CHCl_3 + Alc. KOH rarr`
ii. ` C_6 H_5 N_2 Cl + H_3 H _3 PO_2 + H_2 O rarr`
iii. ` C_6 H_5 NH_4 +H_2 SO_4 (Conc.) rarr`
iv. ` C_6 H_5 H_2 cl + C-H_5 OH rarr `
v. ` C_6 H_5 NH_2 Cl + C_2 H_5 OH rarr`
vi. ` C_6 H_5 NH_2 +Br_2 (Aq.) rarr`.
vii `C_6 H_5 N_2 Cl underset((ii)NaNO_(2)//Cu,Delta)overset((i)HBF_(4))rarr`

Explanation

i.
ii
iii.
iv.
v.
vi. .
vii.