Some of the best books for KEAM Chemistry preparation are Organic Chemistry by O.P Tandon, Numerical Chemistry by P Bahadur, and Inorganic Chemistry by O.P Tandon.
Some of the best books for KEAM Physics preparation are Problems in Physics by A.A Pinsky, Concept of Physics Vol 1&2 by H.C Verma and Fundamentals of Physics by Halliday, Resnick and Walker.
The KEAM exam is not considered to be a very difficult examination if prepared using the accurate resources and by attempting the sample papers and the previous year question papers.
The KEAM syllabus covers the subjects of Mathematics, Physics, and Chemistry equivalent to that of the 10+2 level. The KEAM syllabus is determined by the CEE. However, it is not solely based on NCERT or any other textbook.
Some of the recommended books for the KEAM Mathematics paper are Problems in Calculus in one variable by Isaak Abramovich, Mathematics for classes 11 and 12 by R. D Sharma, NCERT Mathematics by CBSE, Maron Higher Algebra by Hall Knight and Complete Mathematics by MC Graw Hills.