Hi,

As you must know that the Chemistry section is generally divided into Physical, Inorganic and Organic chemistry.

The most important topics are:

Transition Elements and Coordination Chemistry Periodic table and Representative Elements
Thermodynamics And Gaseous State
Chemical Bonding
Chemical And Ionic Equilibrium
General Organic Chemistry
Hydrocarbons

Around 40 % comes from physical, The weightage of the other two topics vaies every year. Generally, there is more weightage to Organic Chemistry.

For more details:
https://engineering.careers360.com/articles/jee-main-syllabus-weightage

Hello There ,

Roughly each of these three have equal weightage , which means if the total chemistry is of 120 marks , then it will be 40 marks for each of them , however there might be slight variations of 5-10 marks . Moreover sometimes there can be questions which contains mixture of concepts from physical and organic .

Hope it Helps