What are the topics that carry more weightage in jee main 2019?

Hello Adityan, The most important chapters by which you can score good marks in jee mains are

In mathematics-

Coordinate Geometry (Straight line, Circle & conic section)

Quadratic Equation

Complex Numbers

Vector & 3-D Geometry

Sequence & Series

Binomial Theorem

Differential and Integral Calculus.

In Physics-

Electristatics

Current Electricity

Magnetic effects of current & Magnetism

Electromagnetic Induction & Alternating Current

Optics

Thermodynamics

Oscillation & Waves

Modern Physics (Dual nature of matter & radiation, Atoms & Nuclei)

In Chemistry-

Hi Aspirant,
The topics which usually carry more weightage in JEE mains are:-

For Physics-
*Modern Physics
*Heat and Thermodynamics
*Optics
*Current Electricity
*Electrostatics
*Magnetism

For chemistry-
*Transition Elements and Coordination Chemistry
*Periodic table and representative elements
*Thermodynamics and gaseous state
*atomic structure
*Chemical Bonding
*Chemical and Ionic Equilibrium

For Maths-
*Calculus
*Coordinate Geometry
*Complex Numbers
*Quadratic Equations
*Matrices and determinants
*Statics and probability

Hope this helps.