How will you convert :
(i) 3- methylaniline to 3- nitrotoluene`
(ii) Aniline to 1,3,5-tribromobenzene

Explanation

To convert 3-methylaniline to 3-nitrotoluene and aniline to 1,3,5-tribromobenzene, we can follow these steps:

### (i) Conversion of 3-methylaniline to 3-nitrotoluene

1. **Start with 3-methylaniline**: The structure of 3-methylaniline consists of an aniline (phenylamine) with a methyl group (-CH3) at the meta position (position 3) of the benzene ring.

2. **Diazotization**: React 3-methylaniline with sodium nitrite (NaNO2) and hydrochloric acid (HCl) at low temperatures (0-5°C). This reaction will convert the amine group (-NH2) into a diazonium salt (C6H4(CH3)-N2^+Cl^-).

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