As you want here I am telling about Joint Entrance Examination (JEE) main exam pattern to to make it easy :

JEE Main analysis

Difficulty Level

The paper was of overall of medium-hard difficulty level. Subject wise, break up of easy, medium, and hard questions can be said to have been as follows.
Level of difficulty Physics Chemistry Mathematics
Number of easy questions 12 11 12
Number of medium questions 12 12 11
Number of hard questions 6 7 7

Topic wise distribution of questions in JEE Main

The number of questions asked from class 11 and 12 physics, chemistry, and mathematics is elaborated in the tables below.

Physics of Class 11
Name of topic Number of questions
Properties of Solids and Liquids 3
Thermodynamics 3
Rotational Motion 2
Oscillations and Waves 2
Physics and Measurement 1
Kinematics 1
Laws of Motion 1
Work, Energy and Power 1
Gravitation 1

Physics of class 12
Name of topic Number of questions
Optics 3
Electrostatics 2
Magnetic Effects of Current and Magnetism 2
Electromagnetic Waves 2
Atoms and Nuclei 2
Current Electricity 1
Electromagnetic Induction and Alternating Currents 1
Electronic Devices 1

Chemistry of Class 11
Name of topic Number of questions
Some Basic Concepts in Chemistry 3
Chemical Bonding and Molecular Structure 2
States of Matter (Gaseous State, Liquid State) 1
Atomic Structure 1
Chemical Thermodynamics 1
Equilibrium 1
Redox Reactions 1
Some Basic Principles of Organic Chemistry 1

Chemistry of Class 12
Name of topic Number of questions
Electrochemistry 3
Organic Compounds containing Oxygen 3
General Principles and Processes of Isolation of Metals 2
Co-ordination Compounds 2
Organic Compounds containing Halogens 2
Organic Compounds containing Nitrogen 2
Chemical Kinetics 1
Solid State 1
P-Block Elements 1
Polymers 1
Biomolecules 1

Mathematics of class 11
Name of topic Number of questions
Co-ordinate Geometry (Straight Lines & Circles, Conic Sections) 5
Complex Numbers and Quadratic Equations 3
Sequences and Series 2
Statistics and Probability 2
Trigonometry 2
Binomial Theorem and its Simple Applications 1
Mathematical Reasoning 1

Mathematics of class 12
Name of topic Number of questions
Integral Calculus 3
Three Dimensional Geometry & Vector Algebra 3
Differentiation and applications 3
Matrices and Determinants 2
Sets, Relations and Functions 1
Limit, Continuity and Differentiability 1
Differential Equations 1

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