Hi Tejinder

Inorganic chemistry is the most difficult and most easiest at the same time . All you should know is that you should have a list of exceptions in your mind well before the exam.

After NCERT, the books you should refer to are listed as follows:

1. O.P. Tandon

2.Cengage Inorganic Chemistry

The inorganic part is the most scoring part in your mains exam. Without much practice but with more of learning work you can score high in inorganic which will result in increasing your rank for sure.

Make a list of exceptions from the the books you read and try to memorize them well.

Good luck!