How would you prepare :
(i) `C_(6)H_(5)NH_(2) from C_(6)H_(5)NO_(2)`
(ii) `CH_(3)NH_(2) from C_(2)H_(5)NH_(2)`
(iii)` C_(2)H_(5)NH_(2) from CH_(3)NH_(2)`

Explanation

To prepare the compounds as specified in the question, we can follow these steps:

### (i) Preparation of C₆H₅NH₂ (Aniline) from C₆H₅NO₂ (Nitrobenzene)

1. **Reduction of Nitrobenzene**:
- Start with nitrobenzene (C₆H₅NO₂).
- Reduce nitrobenzene using a reducing agent such as iron (Fe) in the presence of hydrochloric acid (HCl) or catalytic hydrogenation (H₂/Pd).
- This reaction will convert the nitro group (-NO₂) into an amino group (-NH₂), yielding aniline (C₆H₅NH₂).
...