Hi Jagdish,

Yes, the syllabus of  class11 and 12 together for JEE Main is as follows:-

@Mathematics

• Complex numbers and quadratic equations
• Matrices and determinants
• Sets, relations and functions
• Mathematical induction
• Permutations and combinations
• Mathematical reasoning
• Limit, continuity and differentiability
• Integral calculus
• Three-dimensional geometry
• Differential equations
• Binomial theorem and its simple applications
• Sequences and series
• Vector algebra
• Statistics and probability
• Trigonometry
• Co-ordinate geometry

@Physics

• Physics and measurement
• Rotational motion
• Thermodynamics
• Kinematics
• Work, energy and power
• Properties of solids and liquids
• Gravitation
• Laws of motion
• Oscillations and waves
• Electronic devices
• Kinetic theory of gases
• Current electricity
• Communication systems
• Electromagnetic induction and alternating currents
• Magnetic effects of current and magnetism
• Optics
• Electromagnetic waves
• Atoms and nuclei
• Electrostatics
• Dual nature of matter and radiation
• Experimental Skills

@Chemistry

• Some basic concepts in chemistry
• States of matter
• Atomic structure
• Chemical bonding and molecular structure
• Chemical thermodynamics
• Solutions
• Equilibrium
• Redox reactions and electrochemistry
• Chemical kinetics
• Surface chemistry
• Purification and characterisation of organic compounds
• Hydrocarbons
• Chemistry in everyday life
• Principles related to practical chemistry
• Organic compounds containing halogens
• Organic compounds containing oxygen
• Organic compounds containing nitrogen
• Polymers
• Some basic principles of organic chemistry
• Biomolecules
• Classification of elements and periodicity in properties
• Hydrogen
• Block elements (alkali and alkaline earth metals)
• P Block elements group 13 to group 18 elements
• d- and f - block elements
• Co-ordination compounds
• Environmental chemistry
• General principles and processes of isolation of metals

You may refer to this article for more information about JEE Main Syllabus.

Feel free to ask doubts in the Comment Section.

I hope this information helps you.

Good Luck!