What are the trend pattern followed by jee main examination in all the subjects ...

Hello,
From Some important chapters ,questions are asked repeatedly in jee mains.But there are that chapters also which are of less importance but many questions are asked from them in jee mains.So you can never expect that questions will come from a set of important  chapters. But according to previous year's trends ,below are the important topics:

• Important Topics For JEE Main Chemistry:

p Block Elements
Coordination Compounds
Biomolecules and Polymers
d and f Block elements
Chemical Bonding and Molecular Structure
s Block elements ( Alkali and Alkaline earth Metals) and Hydrogen
Electrochemistry
Chemical Kinetics
Atomic Structure
Alkanes, Alkenes and Alkynes ( Hydrocarbons)

• Important Topics For JEE Main Physics:

Properties of Matter and Fluid Mechanics
Electrostatics
Semiconductors and Communication System
Electromagnetic Induction and Alternating Current
Ray Optics
Magnetic Effects of Current
Laws of Thermodynamics
Current Electricity
Atomic Structure in Modern Physics

• Important Topics For JEE Main Maths:

Trigonometrical Ratios, Functions and Identities
Sequences and Series (Progressions)
Vector
Permutation and Combination
Statistics
Parabola
Definite Integration
Circle
Indefinite Integration
Binomial Theorem
Quadratic Equations