Hello,
By your question I guess you are asking about AP EAMCET.
Engineering, Agriculture, Medical Common Entrance Test is state level exam conducted for admissions to above stated courses in participating institutes.
The exam is of 3 hours duration.
Following are the most important chapters;

• Physics

Heat and Thermodynamics, Work energy and power, mechanics, electricity

• Chemistry

Chemical bonding and chemical structure, Atomic structure, Classification of elements, Aldehyde and Ketones, Carboxylic Acids and derivatives

• Mathematics

Integral calculus, vectors, geometry, trigonometry

NCERTs would be the best books to practice. Also refer to previous year question papers to get a feel of type of questions asked.

Follow this link for more information and preparation tips
https://www.careers360.com/exams/ap-eamcet

Good luck