Which chapter are directly on reading and formula based topics and have weightage for jee mains 2018? Plz tell me

In chemistry direct questions come from ncert.

Coordinate gemotery and , 3d, vector

One can't tell you like that.However below  is the list of some important chapters for your preparation of jee mains 2018:

Important Topics For JEE Main 2018



Listed below are the important topics for JEE Main subject wise based on previous years papers.



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