Aditya, JEE Mains will be held with reduced syllabus which means the chapter wise distribution and weightage might change. So we need to wait for the updated syllabus and an official information regarding this. But going by previous years, In Chemistry, Transition Elements and Coordination Chemistry, Periodic Table and Representative elements take 3 questions slot. Thermodynamics and Gaseous state, Atomic structure, Chemical Bonding, Chemical and Iconic Equilibrium, Solid State and Surface Chemistry and Nuclear Chemistry and Environment get 2 questions slot each and the remaining get 1 question each.

Hello aspirant

Organic chemistry is considered to be the rank decider for jee main exam. Anyone who is very comfortable with organic chemistry. always has an extra edge over others.

Chapter wise weightage

chapter                               weight out of 120

Basic principles                         6.33

Hydrocarbons and   its              6.33

substituents

O containing compounds          8.33

N containing compounds           3.00

Biomolecules and polymers       5.67

Environmental and everyday      1.67

life chemistry

The most St important topics in organic chemistry are

1. Basic principles of organic chemistry

•Structure and Nomenclature of organic compounds

•Structural and stereoisomerism in organic chemistry

•Electronic displacement effects in covalent bonds.

2. Hydrocarbons and Halides

•Structure, physical and chemical property of Alkanes, Alkenes and Alkynes, benzene, haloalkanes and Haloarenes

3. O containing compounds

Alcohols, phenols, Ethers, structure physical & chemical properties

•aldehydes, ketones: physical and chemical properties

• carboxylic acids & their derivative: structure and chemical property

4. Nitrogen containing compounds

Amines , Diazonium salts: chemical properties

5. Biomolecules

•Monosachharides : structure and chemical property

• proteins and enzymes: structure and chemical property

•Nucleic acids: structure and properties

6. Polymers

Addition and condensation polymerization: mechanism and examples

Commercial polymers

7. Chemistry in everyday life

Drugs: classification & therapeutic action

Soaps & detergents

8. Environmental chemistry

Atmospheric pollution and control

Water pollution and control