Hello Veda Murthy!

Books to prepare for KAS Prelims and Mains examination are given below:

Ancient India by D.D.Kausambi’s Historical Outline

English Grammar by Wren and Martin
Indian History :
India Struggle for Independence by Bipin Chandra
Modern India Spectrum publications
NCERT Books ( XI & XII )
Indian Polity :
Indian constitution DD Basu
Indian polity by Laxmikant

Geography :

Spectrum Publication. Geography of Karnataka

NCERT books

Fundamentals of Physical Geography class 11

India Physical Geography Class 11

Human Geography class 12

Indian People and economy Class 12

Current Affairs :

Newspapers

Prajavaani

The Hindu

Competition WIZARD

Sparda Spoorthi

Sparda chaithra.

Economy:

Understanding economic development Class X

Indian Economic development class 11

Thanks!

All the best!