Unit and Topic	Number of Questions	Total Marks	Weightage Percentage
Inorganic Chemistry-I	8	32	17.78%
Chemical Bonding	5	20	11.11%
P-block	1	4	2.22%
Periodic Table & Periodicity in Properities	1	4	2.22%
s-block	1	4	2.22%
Inorganic Chemistry-II	8	32	17.78%
Coordination Compounds	4	16	8.89%
d-block & f-block Elements	2	8	4.44%
Metallurgy	1	4	2.22%
Qualitative Analysis	1	4	2.22%
Organic Chemistry-I	3	12	6.67%
General Organic Chemistry-II	3	12	6.67%
Organic Chemistry-II	13	52	28.89%
Alkyl Hallide, Alchol & Ether (Reaction Mechanism)	2	8	4.44%
Aromatic Compounds	1	4	2.22%
Biomolecules	1	4	2.22%
Carbonyl Compounds	4	16	8.89%
Chemistry in Every Life	1	4	2.22%
Environmental Chemistry	1	4	2.22%
IUPAC & Isomerism	2	8	4.44%
Practical Organic Chemistry	1	4	2.22%
Physical Chemistry-I	7	28	15.56%
Atomic Structure & Nuclear ChemistryChemicak Equilibrium	1	4	2.22%
Chemical Equilibrium	2	8	4.44%
Ionic Equilibrium	1	4	2.22%
Mole Concept	1	4	2.22%
Thermodynamics and Thermochemistry	2	8	4.44%
Physical Chemistry-II	6	24	13.33%
Chemical Kinetics	2	8	4.44%
Electrochemistry	1	4	2.22%
Solid State	1	4	2.22%
Solution & Colligative Properities	1	4	2.22%
Surface Chemistry	1	4	2.22%

Hello Dhanalakshmi
The weight age of the chapters in chemistry are mainly vested in the fact that majority of the questions asked from organic chemistry followed by Physical and Inorganic Chemistry
To develop a concept of proper organic chemistry you need to be well versed with the nomenclature techniques and the reaction mechanism
You also need to be well versed with the molar and equivalence concepts and practice regular numericals based on the various formulae and typical patterns which are usually asked in examination
Weightage of chapters from which most of the questions are asked as seen in the recent years Neet papers are principles of organic chemistry chemical bonding, metallurgical Sciences and alloys, carbonyl compounds and ionic state and balancing
Hope this helps, thank you

If you look at the question paper of NEET-UG 2017, here's the split up of the weightage for topics of class 11 & 12 -
INORGANIC CHEMISTRY FOR CLASS 11, that includes topics like chemical bonding, P-block, periodic table and S-block. Around 8 questions were asked from these topics last year that amounts to nearly 17.78% weightage
More emphasis was paid on Chemical bonding.
INORGANIC CHEMISTRY FOR CLASS 12, that includes topics like Coordination compounds, D-block & F-block elements, metallurgy, qualitative analysis. Around 8 questions have been asked from these topics as well last year which is again 17.78%, weightage.
More emphasis was paid on coordination compounds.
ORGANIC CHEMISTRY FOR CLASS 11, that includes general organic chemistry. Around 3 questions were asked last year with a weightage of 6.67%.
ORGANIC CHEMISTRY FOR CLASS 12, includes topics like Alkyl halide, alcohols, ether, Aromatic compounds, Biomolecules, carbonyl compounds, Chemistry in everyday life, Environmental chemistry, IUPAC and isomers, practical organic chemistry. Around 13 questions were asked and a weightage of 28.89%.
More emphasis was paid on carbonyl compounds.
PHYSICAL CHEMISTRY FOR CLASS 11, includes topics like atomic structure & nuclear chemistry, chemical and physical equilibrium. Around 7 questions were asked from these topics and a weightage alloted was 15.56%.
More emphasis was paid on chemical equilibrium and Thermodynamics.
PHYSICAL CHEMISTRY FOR CLASS 12, includes topics like chemical kinetics, electrochemistry, solid state, solution and colligative properties. Around 6 questions were asked from these topics with a weightage of 13.33%.
More emphasis was paid on chemical kinetics.

Hope this helps

Hi Dhana Lekshmi

CHEMISTRY – Weightage of various NEET Topics in Past Year’s Question Papers

Unit and Topic	Number of Questions	Total Marks	Weightage Percentage
Inorganic Chemistry-I	8	32	17.78%
Chemical Bonding	5	20	11.11%
P-block	1	4	2.22%
Periodic Table & Periodicity in Properities	1	4	2.22%
s-block	1	4	2.22%
Inorganic Chemistry-II	8	32	17.78%
Coordination Compounds	4	16	8.89%
d-block & f-block Elements	2	8	4.44%
Metallurgy	1	4	2.22%
Qualitative Analysis	1	4	2.22%
Organic Chemistry-I	3	12	6.67%
General Organic Chemistry-II	3	12	6.67%
Organic Chemistry-II	13	52	28.89%
Alkyl Hallide, Alchol & Ether (Reaction Mechanism)	2	8	4.44%
Aromatic Compounds	1	4	2.22%
Biomolecules	1	4	2.22%
Carbonyl Compounds	4	16	8.89%
Chemistry in Every Life	1	4	2.22%
Environmental Chemistry	1	4	2.22%
IUPAC & Isomerism	2	8	4.44%
Practical Organic Chemistry	1	4	2.22%
Physical Chemistry-I	7	28	15.56%
Atomic Structure & Nuclear ChemistryChemicak Equilibrium	1	4	2.22%
Chemical Equilibrium	2	8	4.44%
Ionic Equilibrium	1	4	2.22%
Mole Concept	1	4	2.22%
Thermodynamics and Thermochemistry	2	8	4.44%
Physical Chemistry-II	6	24	13.33%
Chemical Kinetics	2	8	4.44%
Electrochemistry	1	4	2.22%
Solid State	1	4	2.22%
Solution & Colligative Properities	1	4	2.22%
Surface Chemistry	1	4	2.22%

You can check the chapter-wise weightage of NEET in chemistry below

 

Inorganic Chemistry-I 17.78%

Inorganic Chemistry-II 17.78%

Organic Chemistry-I 6.67%

Organic Chemistry-II 28.89%

Physical Chemistry-I 15.56%

Physical Chemistry-II 13.33%

 

You can check the important topics below

 

Chemical Bonding- 11.11%

Coordination Compounds- 8.89%

General Organic Chemistry-II- 6.67%

Carbonyl Compounds- 8.89%

 

Make sure to score good marks in your exam your concepts should be clear. You can take help of NCERT books. You can solve previous year questions as well to understand the level of the questions.

 

All the best!!

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