Teaching OSSSC TGT Teachers Mock Test Series 2025 Chemistry Organic Chemistry – Some Basic Principles and Techniques
The set of meta directing functional groups from the following sets is:
1
–CN, –NH2, –NHR, –OCH3
2
–NO2, –NH2, –COOH, –COOR
3
–NO2, –CHO, –SO3H, –COR
4
–CN, –CHO, –NHCOCH3, –COOR