Hi Suhas...Yes NTA release the syllabus...that is originally same as previous years syllabus...there is no change in syllabus...The most important thing a candidate should know while preparing for NEET is its syllabus. Otherwise, it has no worth how much you study. For the best result first know the syllabus and weightage of topics then study accordingly. Some of the chapters are there which requires much revision and on the other hand some is easily learnt. So try to focus on the chapters and topics which will provide you with better marks. Also, it must be less time taking. We have arranged the chapters of 11th and 12th read it carefully: As the centre announced that syllabus will be same as it was in previous years. It solo follows NCERT curriculum. Biology syllabus for NTA NEET 2019:NTA NEET 2019 Syllabus for Biology – XIthDiversity in Living WorldStructural Organisation in Animals and PlantsPlant PhysiologyHuman physiologyCell Structure and FunctionNTA NEET 2019 Syllabus for Biology – XIIthReproduction, Ecology, Environment Biology, Human Welfare, Biotechnology and Its Applications Genetics and Evolution Biology chapter wise weightageof each chapter for NEET 2019: Class XI Unit Topic / Chapters.Weightage:-I Diversity of Living Organisms 14%Chapter-1: The Living WorldChapter-2: Biological ClassificationChapter-3: Plant KingdomChapter-4: Animal KingdomII Structural Organisation in Plants Animals 5% Chapter-5: Morphology of Flowering Plants Chapter-6: Anatomy of Flowering Plants Chapter-7: Structural Organisation in AnimalsIII Cell: Structure and Function 9%Chapter-8: Cell-The Unit of LifeChapter-9: BiomoleculesChapter-10: Cell Cycle and Cell DivisionIV Plant Physiology 6% Chapter-11: Transport in Plants Chapter-12: Mineral Nutrition Chapter-13: Photosynthesis in Higher Plants Chapter-14: Respiration in Plants Chapter-15: Plant – Growth and Development V Human Physiology 20% Chapter-16: Digestion and Absorption Chapter-17: Breating and Exchange of Gases Chapter-18: Body Fluids and Circulation Chapter-19: Excretory Products and Their Elimination Chapter-20: Locomotion and Movement Chapter-21: Neural Control and Coordination Chapter-22: Chemical Coordination and IntegrationClass XII Unit Topic / Chapters Weightage VI Reproduction 9% Chapter-1: Reproduction in Organisms Chapter-2: Sexual Reproduction in Flowering Plants Chapter-3: Human Reproduction Chapter-4: Reproductive Health VII Genetics and Evolution 18% Chapter-5: Principles of Inheritance and Variation Chapter-6: Molecular Basis of Inheritance Chapter-7: Evolution VIII Biology and Human Welfare 9% Chapter-8: Human Health and Diseases Chapter-9: Strategies for Enhancement in Food Production Chapter-10: Microbes in Human Welfare IX Biotechnology and its Applications 4% Chapter-11: Biotechnology – Principles and Processes Chapter-12: Biotechnology and its Application X Ecology and Environment 6% Chapter-13: Organisms and Populations Chapter-14: Ecosystem Chapter-15: Biodiversity and its Conservation Chapter-16: Environmental IssuesPhysics syllabus for NTA NEET 2019: Syllabus for Physics – XIth Physical world and measurement Kinematics Motion of System of Particles and Rigid Body Work, Energy and Power Laws of Motion Behaviour of Perfect Gas and Kinetic Theory Properties of Bulk Matter Thermodynamics Gravitation Oscillations and WavesSyllabus for Physics – XIIthElectrostatics Current Electricity Optics Electromagnetic Induction and Alternating Currents Electromagnetic Waves Magnetic Effects of Current and Magnetism Electronic Devices Atoms and Nuclei Dual Nature of Matter and RadiationPhysics chapter wise weightage of each chapter in neet 2019:Class XI Unit Topic / Chapters Weightage*I Chapter–1: Physical World 2% Chapter–2: Units and Measurements II Chapter–3: Motion in a Straight Line 3% Chapter–4: Motion in a Plane III Chapter–5: Laws of Motion 3% IV Chapter–6: Work, Energy and Power 4% V Chapter–7: System of Particles and Rotational Motion 5% VI Chapter–8: Gravitation 2% VII Chapter–9: Mechanical Properties of Solids 3% Chapter–10: Mechanical Properties of Fluids Chapter–11: Thermal Properties of Matter VIII Chapter–12: Thermodynamics 9% IX Chapter–13: Kinetic Theory 3% X Chapter–14: Oscillations 3% Chapter–15: WavesClass XII Unit Topic / Chapters WeightageI 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 ElectronicsChemistry syllabus for NTA NEET 2019:Syllabus for Chemistry – XIth Some Basic Concepts of Chemistry Structure of Atom Classification of Elements and Periodicity in Properties Hydrogen States of Matter: Gases and Liquids Chemical Bonding and Molecular Structure Equilibrium Redox Reactions Thermodynamics s-Block Element (Alkali and Alkaline earth metals) Some p-Block Elements Environmental Chemistry Hydrocarbons Organic Chemistry- Some Basic Principles and Techniques

I think this will help you...

No there is not a fixed Weightage to any exam organised by NTA there is a syllabus it is same as the last year for all the exams and also there will not be any change in the difficulty level of the exam but the chapter wise weightage is not waste as this is a competitive exams and to increase the difficulty there is not a fixed Weightage.