What is the official UPSEE syllabus?

Physics - Electromagnetic induction, Work, Power and Energy, Laws of Motion, Motion in one dimension, Motion in two dimensions, Wave, Linear Momentum & collisions, Oscillatory motion, Rotation of a rigid body about a fixed axis Ray Optics and optical instruments, Measurement, Heat and thermodynamics, Modern Physics, Electrostatics, Current Electricity, Magnetic Effect of Current, Gravitation, Mechanics of solids and fluids, Wave Optics, Magnetism in Matter. Chemistry - Atomic Structure, Chemical Bonding, Redox Reactions, Chemical Equilibrium and Kinetics, Acid-Base Concepts, Colloids, Colligative Properties of Solution, Periodic Table,Hydrocarbons, monohydric alcohols, aldehydes,ketones, monocarboxylic acids, primary amines, benzene, nitrobenzene, aniline, phenol, benzaldehyde, benzoic acid, Grignard Reagent, Thermochemistry, General Organic Chemistry, Isomerism, IUPAC, Polymers, Carbohydrates, Hydrocarbons, monohydric alcohols, aldehydes, ketones, monocarboxylic acids, Solid State, Petroleum. Maths - Coordinate Geometry, Vectors, Statics, Probability, Calculus, Trigonometry Algebra, Dynamics

Hello student the syllabus of UPSEE examination is very similar to any other engineering entrance examination which is the syllabus of your class 11 class 12 of physics chemistry and mathematics. Prefer NCERT to build your basic concept and make sure you do each and every example and exercise questions of Ncert before jumping to a reference book.
Most important do 5 previous year question paper
For more updates refer to the link mentioned below
https://www.google.com/amp/s/engineering.careers360.com/articles/upsee-syllabus
Feel free to comment if you have any doubt
Good luck