Hello Aspirant,

Since you have not mentioned the name of examination so it is quite difficult to guide you with an accurate information but if we go through your profile then it shows that you are an engineering aspirant and you might be asking about JEE-Main , if not then please correct me in the comment section below.

For JEE-Main, some important chapters that carry higher weightage for Chemistry as well as for Physics and Chemistry are enlisted below :-

@Chemistry

• Transition Elements and Coordination Chemistry  :-  12 marks
• Periodic table and Representative Elements :- 12 marks
• Thermodynamics And Gaseous State:- 8 marks
• Atomic Structure:- 8 marks
• Chemical Bonding:- 8 marks
• Chemical And Ionic Equilibrium:- 8 marks
• Nuclear Chemistry And Environment:- 8 marks

@Physics

• Modern Physics:- 20 marks
• Heat and Thermodynamics :- 12 marks
• Optics:- 12 marks
• Current Electricity :- 12 marks
• Electrostatics :- 12 marks
• Magnetics :- 8 marks

@Mathematics

• Coordinate Geometry  :-  20 marks
• Limits, Continuity and Differentiability :- 12 marks
• Integral Calculus :- 12 marks
• Complex numbers and Quadratic Equation :- 8 marks
• Matrices and Determinants :- 8 marks
• Statistics and Probability :- 8 marks
• Vector Algebra :- 8 marks

For complete details about important chapters and other weightage related information kindly check out the links given below :-

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

You can also check out JEE-Main Learner package for your preparation :-

https://learn.careers360.com/jee-main-coaching/?utm_source=%20QnA

I hope this information helps you.

Good Luck!!