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Solution


Q.

What is the correct IUPAC name of                          [2025]
1 3-Bromo-2-hydroxy-5-nitrobenzoic acid  
2 3-Bromo-4-hydroxy-1-nitrobenzoic acid  
3 2-Hydroxy-3-bromo-5-nitrobenzoic acid  
4 5-Nitro-3-bromo-2-hydroxybenzoic acid  

Ans.

(1)

Numbering is done to give lowest set of locants, starting from principal functional group. Substituents are placed in alphabetical order in IUPAC name.