Hi, You can even refer to IIT preparation material-

Reference Books for KIITEE exam:

Physics:

• Concept of Physics Volume 1 by H. C. Verma ·
• Concept of Physics Volume 2 by H. C. Verma ·
• Problem in General Physics by I.E. Irodov

Mathematics:

• Complete Mathematics by Mcgraw Hills Education
• Comprehensive Mathematics by Mcgraw Hills Education

Chemistry

• Organic Chemistry by Morrision & Boyd ·
• Concise Inorganic Chemistry J. D. Lee Y

You will get hold of this exam easily if you refer to these books..!!

All the best.