iam studying 11th class I want to become an IAS officer can you tell me which NCERT book is preferably to read
You should read the NCERT books from cclass 6th to 12th. It will give great benefit to you.As the other books are just a high level version of these NCERT books,you can understand the details and your basics will be superb!!
After reading NCERT's you will be able to understand the importance and need of what to study and what not.
Best of luck!!!