I would suggest you to go through with the given below link to check NEET 2019 complete Syllabus.

NEET 2019 Syllabus

Good Luck!

Hey.

Here is the NEET syllabus and each chapter's weightage which will help you know the weightage each chapter holds and which one is important.

Physical world and measurement  2%

 Chapter–1: Physical World  Chapter–2: Units and Measurements

 II Kinematics  3%  Chapter–3: Motion in a Straight Line  Chapter–4: Motion in a Plane  

III  Laws of Motion  3%  Chapter–5: Laws of Motion

 IV  Work, Energy and Power  4%  Chapter–6: Work, Energy and Power  

V  Motion of System of Particles and Rigid Body  5%  Chapter–7: System of Particles and Rotational Motion

 VI  Gravitation  2%  Chapter–8: Gravitation  

VII  Properties of Bulk Matter  3%  Chapter–9: Mechanical Properties of Solids  Chapter–10: Mechanical Properties of Fluids  Chapter–11: Thermal Properties of Matter

 VIII  Thermodynamics  9%  Chapter–12: Thermodynamics

 IX  Behaviour of Perfect Gas and Kinetic Theory  3%  Chapter–13: Kinetic Theory

 X  Oscillation & Waves  3%  Chapter–14: Oscillations  Chapter–15: Waves  

ClassXII  

  I  Electrostatics  9%  Chapter-1: Electric Charges and Fields  Chapter-2: Electrostatic Potential and Capacitance

 II  Current Electricity  8%  Chapter-3: Current Electricity

 III  Magnetic Effect of Current & Magnetism  5%  Chapter-4: Moving Charges and Magnetism  Chapter-5: Magnetism and Matter

 IV  Electromagnetic Induction & Alternating Current  8%  Chapter-6: Electromagnetic Induction  Chapter-7: Alternating Current

 V  Electromagnetic Waves  5%  Chapter-8: Electromagnetic Waves

 VI  Optics  10%  Chapter-9: Ray Optics and Optical Instruments  Chapter-10: Wave Optics

 VII  Dual Nature of Matter and Radiation  6%  Chapter-11: Dual Nature of Radiation and Matter

 VIII  Atoms & Nuclei  3%  Chapter-12: Atoms  Chapter-13: Nuclei  

IX  Electronic Devices  9%  Chapter-14: Semiconductor Electronics  Total  100%  *Approximate weightage; based on previous year exams’ and experts’ analysis.  

Chemistry  

Class XI  

 I  Basic Concepts of Chemistry  1%

 II  Structure of Atom  2%  

III  Classification of Elements & Periodicity in Properties  2%

 IV  Chemical Bonding and Molecular Structure  5%  

V  States of Matter: Gases and Liquids  2%

 VI  Thermodynamics  8%  

VII  Equilibrium  6%  

VIII  Redox Reactions  3%

 IX  Hydrogen  3%

 X  s-Block Elements  2%

 XI  Some p-Block Elements  2%  

XII  Organic Chemistry: Basic Principles & Techniques  4%  

XIII  Hydrocarbons  3%  

XIV  Environmental Chemistry  2%  

Class XII  

 I  Solid State  2%

 II  Solutions  5%  

III  Electrochemistry  2%  

IV  Chemical Kinetics  3%  

V  Surface Chemistry  2%  

VI  Isolation of Elements  2%  

VII  p-Block Elements  5%  

VIII  d- and f-Block Elements  4%

 IX  Coordination Compounds  9%  

X  Haloalkanes and Haloarenes  3%  

XI  Alcohols, Phenols and Ethers  4%

 XII  Aldehydes, Ketones and Carboxylic Acids  4%

 XIII  Organic Compounds containing Nitrogen  2%  

XIV  Biomolecules  3%  

XV  Polymers  3%  

XVI  Chemistry in Everyday Life  2%