As you have asked about the mock test for Kerala Engineering, Agriculture, Medical (KEAM) exam for medical paper, I want to tell you that I am unable to provide you with the mock test, but I am providing you with the syllabus for it, which will help you, check below for the details

Physics:
Introduction and measurement
Description of motion in one dimension
Description of motion in two and three dimensions
Laws of motion
Work, energy and power
Motion of system of particles and rigid body rotation
Gravitation
Mechanics of solids and fluids
Heat and thermodynamics
Oscillations
Waves
Electrostatics
Current electricity
Magnetic effect of current and magnetism
Electromagnetic induction and alternating current
Electromagnetic waves
Optics
Dual nature of matter and radiations
Atomic nucleus
Solids and semiconductor devices
Principles of communications

Chemistry:

Basic concepts and atomic structure
Bonding and molecular structure
States of matter
Periodic properties of elements and hydrogen
S-block elements and principles of metallurgy
P-block elements
D-block and f-block elements
Thermodynamics
Chemical equilibrium
Solutions
Redox reactions and electrochemistry
Chemical kinetics
Surface chemistry
Coordination compounds and organometallics
Basic principles, purification and characterization of organic compounds
Hydrocarbons
Organic reaction mechanism
Stereochemistry
Organic compounds with functional groups containing halogens
Organic compounds with functional groups containing oxygen
Organic compounds with functional groups containing nitrogen
Polymers and biomolecules
Environmental chemistry and chemistry in everyday life

Biology:

Diversity in the living world
Plant kingdom
Cell and cell division
Physiology of plants
Reproduction, growth and development
Ecology and environment
Biotechnology
Origin and evolution of life
Animal kingdom
Structural organisation of the body
Genetics
Physiology of animals
Reproduction and development in animals
Biodiversity and conservation
Biology in human welfare