Important Topics to Focus On for NEET (UG): Physics, Chemistry and Biology

Quick answer: Every chapter in the official NEET (UG) syllabus can be asked, so do not skip whole units. Biology carries half the marks (90 of 180 questions), so it needs the most time. In physics, give extra practice to electrostatics, current electricity, magnetism, optics, modern physics and mechanics. In chemistry, focus on chemical bonding, equilibrium, thermodynamics, coordination compounds and the organic reaction chapters. Prepare from the NCERT Class 11 and 12 textbooks, and check the latest syllabus the National Medical Commission (NMC) publishes on neet.nta.nic.in.

The NEET (National Eligibility cum Entrance Test, Undergraduate) is the single entrance test for MBBS, BDS, AYUSH and allied courses in India. It is one of the country’s largest exams. According to the National Testing Agency (NTA), close to 20 lakh candidates appeared for NEET (UG) 2026 and 11.21 lakh qualified. The Health Ministry told Parliament in December 2025 that there were about 1.29 lakh MBBS seats for 2025-26, so competition is intense.

NEET (UG) exam pattern

The pattern below is from NTA’s Information Bulletin for NEET (UG) 2026. Check the bulletin for the year you are taking the exam.

• All 180 questions are compulsory multiple-choice questions, to be answered in 180 minutes (3 hours). There is no optional section.
• Marking: +4 for a correct answer, −1 for a wrong answer, 0 for an unanswered question.
• The syllabus is notified by the NMC and is printed as an appendix to the bulletin. The syllabus linked on the NEET website in 2026 has 20 physics units, 20 chemistry units and 10 biology units.

NEET (UG) 2026 shows why you should rely only on official notices. NTA cancelled the exam held on 3 May 2026 and, on 12 May, referred the matter to the Central Bureau of Investigation (CBI). It held a re-examination on 21 June 2026 and declared results on 16 July 2026.

Important physics topics for NEET

Physics has 45 questions and many students find it the hardest section. The original version of this article grouped topics loosely (“Semiconductors using Wave Optics”, “Body Dynamics with Rigid Bodies”). Here they are mapped to the actual NMC syllabus units:

• Electrostatics, Current Electricity, and Magnetic Effects of Current and Magnetism: concept-heavy units with many numericals. The original article said past-paper analyses show Magnetic Effects of Current carrying the most physics marks; the number of questions per unit changes from year to year, so treat any weightage table as a rough guide only.
• Electromagnetic Induction and Alternating Currents.
• Optics (ray and wave optics).
• Modern physics: Dual Nature of Matter and Radiation, Atoms and Nuclei, and Electronic Devices (semiconductors).
• Mechanics: Laws of Motion, Work, Energy and Power, Rotational Motion, and Gravitation.
• Thermodynamics and Kinetic Theory of Gases.
• Oscillations and Waves.

For numericals, write down the formula first, check that all quantities are in the same system of units (convert if they are not), and only then substitute values. Our tips to learn physics efficiently cover concept-building in more detail.

Important chemistry topics for NEET

Chemistry is often called the most scoring section because many questions come straight from NCERT. Give physical, inorganic and organic chemistry roughly equal attention:

• Physical chemistry: Some Basic Concepts in Chemistry (mole concept), Atomic Structure, Chemical Thermodynamics, Solutions, Equilibrium (including acids and bases), Redox Reactions and Electrochemistry, and Chemical Kinetics.
• Inorganic chemistry: Chemical Bonding and Molecular Structure, Classification of Elements and Periodicity, p-Block Elements, d- and f-Block Elements, and Co-ordination Compounds.
• Organic chemistry: Some Basic Principles of Organic Chemistry, Hydrocarbons, Organic Compounds Containing Halogens, Oxygen (alcohols, aldehydes, ketones, carboxylic acids) and Nitrogen, and Biomolecules.
• Principles Related to Practical Chemistry, a separate unit that is easy to overlook.

Solve numerical problems regularly to improve your problem-solving ability. If percentage composition questions trip you up, see our explainer on the mass percent formula.

Important biology topics for NEET

Biology has 90 questions, half the paper, split between botany and zoology. Every unit matters, but these carry a lot of questions and reward careful NCERT reading:

• Genetics and Evolution: Mendelian inheritance, deviations from Mendelism, polygenic inheritance, sex determination, Mendelian and chromosomal disorders, the molecular basis of inheritance (DNA replication, transcription, translation, the lac operon) and evolution.
• Human Physiology: breathing and respiration, body fluids and circulation, excretion, locomotion, neural control, and the endocrine system.
• Reproduction: sexual reproduction in flowering plants (including pollination), human reproduction, and reproductive health.
• Plant Physiology: photosynthesis, respiration, and plant growth and development.
• Diversity in Living World and Structural Organisation in Animals and Plants, including plant anatomy and morphology.
• Cell Structure and Function, Biotechnology, Biology and Human Welfare, and Ecology and Environment (including biodiversity and its conservation).

Two corrections to the original list:

• “Digestive System” is not in the current NMC syllabus; the Human Physiology unit no longer includes digestion and absorption. “PAGE Theory” is not a NEET topic at all.
• The old advice to put plant physiology “on the back burner” is risky, because it is still a full syllabus topic.

How to prepare for NEET

1. Start with the official syllabus. Download the syllabus and Information Bulletin from neet.nta.nic.in and tick off units as you finish them.
2. Finish the NCERT textbooks first. Read Class 11 and 12 NCERT biology line by line, then physics and chemistry, before moving to reference books.
3. Make short notes or mind maps for formulas, reactions, diagrams and exceptions, and revise them weekly.
4. Practise past papers and timed mock tests. Past NEET papers show how questions are framed. Practise under the 180-question, 180-minute format and review every mistake.
5. Use negative marking wisely. With −1 for each wrong answer, guessing blindly costs marks; attempt a question when you can eliminate options.
6. Look after yourself. Regular sleep, meals and water matter in the final months. Steady practice builds the confidence you need on exam day.

Before you start, make sure you meet the age and qualifying-exam rules in our guide to NEET eligibility.

Frequently asked questions

How many questions are there in NEET (UG)?

180 compulsory questions: 45 in physics, 45 in chemistry and 90 in biology, for a total of 720 marks in 3 hours, according to NTA’s 2026 Information Bulletin.

Is there negative marking in NEET?

Yes. A correct answer earns 4 marks and a wrong answer loses 1 mark. Unanswered questions get 0.

Which subject has the highest weightage in NEET?

Biology. It has 90 of the 180 questions and 360 of the 720 marks.

Who decides the NEET syllabus?

The National Medical Commission (NMC) notifies the syllabus, and NTA publishes it with the Information Bulletin and on neet.nta.nic.in.

Is NCERT enough for NEET?

NCERT Class 11 and 12 textbooks cover the syllabus and are the base for most questions, especially in biology. Most students add past papers and mock tests for practice.

This guide was checked in October 2026 against NTA’s Information Bulletin for NEET (UG) 2026, the NMC syllabus linked on neet.nta.nic.in, and NTA press releases of 12 May and 16 July 2026. Exam details can change each year, so read the current official notice before you apply.