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NEET 2021 Chemistry Exam Pattern, Marking Scheme, Weightage, Paper Analysis

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Nikkil Visha

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NEET 2021 Chemistry Exam Pattern is expected to release with official notification by NTA in the month of Dec 2020. NEET 2021 Exam Pattern gives details of the type of exam, mode of paper, language, duration, question type, and marking scheme. Check NEET Chemistry Syllabus

NEET 2021 Chemistry paper will have 45 questions based on class XI & XII questions. Candidates will get 4 marks for every correct answer. 1 mark will be deducted for every incorrect answer. The total time duration to complete the paper is 3 hours. 

No major changes are expected in the exam pattern. NEET 2021 is an opportunity for all those students who are seeking admission to MBBS and BDS courses offered by top medical colleges or universities of the country. Read the article to know in detail about NEET Chemistry exam pattern, marking scheme, chapter-wise weightage, etc.

NEET 2021 Chemistry Exam Pattern Highlights

Features Highlights
Mode of the Exam Offline
Total Time Duration  3 Hours
Number of Questions 45 Questions (From Chemistry)
Medium English, Hindi, Marathi, Bengali, Tamil, Telugu, Gujarati, Kannada, Oriya, Assamese and Urdu 
Marking Scheme +4 for each correct answer -1 for an incorrect answer

Must Read:

NEET Chemistry Exam Pattern

NEET Chemistry Exam Pattern 2021

NEET Mode of Examination: 

  • NEET 2021 will be conducted offline in pen and paper-based mode. 

  • During the time of examination, candidates will be provided with a rough booklet. 

NEET Syllabus: 

  • The exam will cover both Class 11 and Class 12 syllabus from Chemistry of the NCERT curriculum. 

NEET Marking Scheme: 

  • As per NEET 2021 Marking Scheme, candidates will be awarded 4 marks for each correct answer. 1 mark will be deducted for every incorrect answer. 

NEET Exam Duration: 

  • Candidates will get a total of 3 hours to attempt 180 questions.

Medium of Question Paper: 

  • Candidates can choose to take the exam in any of the following 11 languages: English, Hindi, Tamil, Assamese, Oriya, Kannada, Bengali, Gujarati, Marathi, Urdu, and Telugu language. 

Medium of the exam Exam Centre
English All exam cities/centers
Tamil Available only in exam centers in Tamil Nadu
Kannada Available only in exam centers in Karnataka
Gujarati Available only in exam centers in Gujarat, Daman, Dadra and Nagar Haveli
Marathi Available only in exam centers in Maharashtra
Assamese Available only in exam centers in Assam
Hindi All exam cities/centers
Telugu Available only in exam centers in Andhra Pradesh and Telangana
Oriya Available only in exam centers in Orissa
English and Urdu Available only in exam centers 
Bengali Available only in exam centers in West Bengal

Marking Scheme of NEET Chemistry

Marking Scheme for NEET Chemistry Paper

  • Candidates will get 4 marks for every correct answer. 
  • 1 mark will be deducted for every incorrect answer.
  • 0 mark will be rewarded for unattempted questions.
  • Candidates are advised not to fill more than one option in the OMR sheet. If they do so then that question will be considered incorrect and you will get negative marks. 
Subject Total Marks Number of questions Marking Scheme
Chemistry 180 45 +4 marks will be awarded for each correct response -1 mark will be deducted for each incorrect response

Important Topics for NEET Chemistry

Important Topics for NEET Chemistry

NEET chemistry syllabus can be divided into 3 parts i.e Organic, Inorganic, and Physical Chemistry. The weightage of questions asked from each section is almost the same every year. 

  • NEET Physical Chemistry: It’s the numerical section of NEET Chemistry.
  • NEET Organic Chemistry: From this section, you must focus on memorizing the names of various compounds that constitute reagents, subtracts, etc.
  • NEET Inorganic Chemistry: This section is considered the easiest section of NEET Chemistry.

Candidates must note that NEET 2021 syllabus will be reduced. As the classes will start late this year, candidates will not get enough time to cover up all the important topics hence the authorities have decided to curtail NEET 2021 syllabus. Check NEET Chemistry Syllabus

Important Topics based on all the 3 sections of chemistry are mentioned in the table below:

Organic Chemistry Inorganic Chemistry Physical Chemistry
Amines D Block Elements Atomic Structure
Organic Compounds Containing Oxygen Classification of Elements & Periodicity Mole Concept & Stoichiometry
Environmental Chemistry Chemical Bonding and Molecular Structure Redox Reactions & Electrochemistry
Basic Principles of Organic Chemistry Coordination Compounds Thermochemistry & Thermodynamics
Biomolecules P Block Elements Equilibrium
Hydrocarbons and their substituents Practical Chemistry Surface Chemistry
Polymers Hydrogen and S Block Elements Nuclear Chemistry
F Block Elements States of Matter & Solutions Chemical Kinetics

Check Mobile App and Online Resources for NEET Preparation

Chapter-wise weightage of Topics

NEET 2021 Chemistry - Chapter wise weightage

Based on the questions asked in previous years we have tabulated the weightage of sections or topics given to class XII and XII:

Topics of Class XI Number of expected questions Topics of Class XII Number of Expected questions
Basic concepts of Chemistry 1% Solid State 2%
Structures of Atom 2% Solutions 5%
Classification of Elements & Periodicity in Properties 2% Electrochemistry 2%
Chemical Bonding and Molecular Structure 5% Chemical Kinetics 3%
States of Matter: Gases and Liquids 2% Surface Chemistry 2%
Thermodynamics 8% Isolation of Elements 2%
Equilibrium 6% p-Block Elements 5%
Redox Reactions 3% d- and f-Block Elements 4%
s-Block Elements 2% Coordination Compounds 9%
Some p-Block Elements 2% Haloalkanes and Haloarenes 3%
Organic Chemistry: Basic Principles & Techniques 4% Alcohols, Phenols and Ethers 4%
Hydrocarbons 3% Aldehydes, Ketones and Carboxylic Acids 4%
Environmental Chemistry 2% Organic Compounds containing Nitrogen + Biomolecules 2% + 3%
Hydrogen - Polymers + Chemistry in Everyday Life 3% + 2%

NEET Chemistry Paper Analysis

NEET Chemistry Paper Analysis

Every year we can observe a steep increase in the number of students attempting NEET. 

  • In NEET 2020 around 15 lakh, students appeared for the examination.
  • The increase in the number of candidates could be due to the rise in the number of states that are opting for NEET scores over other common entrance tests.
  • This also means that every year the competition is getting higher. So in order to prepare well for the exam candidates must go through the paper analysis. This will help them in getting an idea about the difficulty level of the exam, weightage of sections or topics etc. 

NEET Chemistry Paper Analysis 

  • Total Questions from Chemistry: 45 Questions
  • Total Questions from Class XI: 21 Questions
  • Total Questions from Class XII: 24 Questions

Difficulty Level of Questions

Difficulty Level/ Topic Organic
Easy 2 3 3 2 1 3 14
Medium 2 5 4 3 3 5 22
Difficult 0 1 3 1 3 1 9
Total 4 9 10 6 7 9 45

NEET Chemistry Paper Analysis of last 10 years

Sample Questions from NEET Chemistry

Question 1: The number of unpaired electrons in gaseous species of Mn3+, Cr3+ and V3+ respectively are:

  1. 4, 4 and 2
  2. 3, 3 and 2
  3. 4, 3 and 2
  4. 3, 3 and 3

Answer: (c) 4, 3 and 2

Question 2: Which one of the following is not an isotope of hydrogen?

  1. Deuterium

  2. Tritium

  3. Ortho hydrogen

  4. None of these

Answer: (c) Ortho hydrogen

Question 3: Oxygen can be converted into ozone by

  1. oxidation at high temperature

  2. catalytic oxidation

  3. oxidation under high pressure and temperature

  4. silent electric discharge

Answer: (d) silent electric discharge

Question 4: Which is the best-suited method for the separation of para and ortho-nitrophenols from 1:1 mixture?

(a) crystallisation

(b) chromatography

(c) sublimation

(d) steam distillation

Answer: (d) steam distillation

Question 5: What will be the value of ΔH, if the forward and reverse reactions have the same energy of activation?

(a) ΔH = ΔG = ΔS = 0

(b) ΔS = 0

(c) ΔG = 0

(d) ΔH = 0

Answer: (d) ΔH = 0

Question 6: Elements X and Y combine to form two compounds XY and X2Y. Find the atomic weight of X and Y, if the weight of 0.1 moles of XY is 10g and 0.05 moles of X2Y is 9g

(a) 30, 20

(b) 80, 20

(c) 60, 40

(d) 20, 30

Answer: (b) 80, 20

Question 7: Which one of the following is most acidic?

  1. Na2O

  2. MgO

  3. Al2O3

  4. CaO

Answer: (c) Al2O3

Question 8: Which of the following at ordinary temperature and pressure exists as a linear polymer due to extensive hydrogen bonding?

  1. H2O

  2. HCl

  3. HF

  4. NH3

Answer: (c) HF

Download NEET Practice Papers

How to Fill the OMR sheet?

One salient feature mentioned in the exam pattern of NEET 2021 is that NEET is an offline exam. So the knowledge of how to mark the OMR sheet becomes an important factor. 

  • Candidates can only use a ballpoint pen that will be provided by the authorities at the examination hall. 

  • Changing answers on the OMR sheet is not allowed.

  • Erasing any information printed on the OMR sheet is not allowed.

  • Rough work should be done on the test booklet provided by the examiner.

  • A candidate must not forget to mark the test booklet code on the OMR sheet.

  • Candidates are advised not to fill more than one option in the OMR sheet. If they do so then that question will be considered incorrect and you will get negative marks. 

Important Instructions for Candidates

  • No Electronic device is allowed in the examination center. 
  • Strictly follow the dress code. 
  • It is advised to visit the center a day before the examination to confirm the location, distance, etc. of the center to avoid delay. It is the responsibility of the candidate to reach the center on time. 
  • No candidate whatsoever is the reason, shall be allowed entry in the examination center after 1.30 PM. 
  • Material to be brought on the day of examination (i) Valid Admit Card, (ii) Passport Size Photograph.
  • Candidates shall be provided Blue/Black ballpoint pen at the examination center to write particulars on the cover page of Test Booklet, OMR sheet, and for darkening the circles of responses.
  • No candidate shall be allowed to use toilets in the last 30 minutes of examination.
  • Candidate must preserve the Admit Card till the allotment of seat in College/Institution.

Frequently Asked Questions

NEET Chemistry Exam Pattern FAQs

Question: Is there any sectional time limit in NEET 2021?

Ans. No. There is no sectional time limit. Candidates will be given 3 hours to complete the paper and they easily move from one section to another. 

Question: Will there be any negative marking in NEET chemistry paper?

Ans. Yes. There is negative marking in NEET 2021. The detailed marking scheme is as follows:

  • Candidates will get 4 marks for every correct answer. 
  • 1 mark will be deducted for every incorrect answer.
  • 0 mark will be rewarded for unattempted questions.
  • Candidates are advised not to fill more than one option in the OMR sheet. If they do so then that question will be considered incorrect and you will get negative marks. 

Question: Do I have to pass all the sections of NEET 2021?

Ans. No. There is no sectional qualifying criteria. Candidates have to qualify in the overall examination. Candidates will get a total of 3 hours to attempt 180 questions.

*The article might have information for the previous academic years, which will be updated soon subject to the notification issued by the University/College.


What is the weightage of periodic elements?
sinbad chongtham

In the NEET Chemistry paper, 20% of the total mark has been allocated for questions from the Periodic Table. At an average, there are 9 questions from Periodic table in the Chemistry paper. The main topics include Periodic Table & Periodicity in Properties, s-block elements, p-block elements, d-block elements, f-block elements, Hydrogen.

neha thasale
In chemistry, what are the chapters on which I must focus first?
sinbad chongtham

You should focus more on the topics with more mark weightage. The topics with high mark weightage in NEET Chemistry are Chemical Bonding and Molecular Structure, Basic Concepts of Chemistry, Chemical Equilibrium, Carbonyl Compounds, Coordination Compounds, Organic Chemistry, etc.

md hussain ansari
Is there any book that contain theory and practice questions of Chemistry?
diya suresh

There are several reference books available at physical stores as well as e-commerce websites from different authors that contains solved previous year question papers as well as mock test papers. You can download pdf format of mock test papers at NEET Chemistry Preparation.

yash raj singh
Is there any way to memorise the nomenclature?
diya suresh

Hi Yash, There are various techniques and tricks to memorize these nomenclature easily. Various coaching centers helps in such tricks and you can also understand the basics to memorise it easily. Refer study materials and practise papers to understand the concept.

dharshini rajendran
How many questions on organic chemistry are asked?
diya suresh

Hi Dharshini, Organic Chemistry Basic Principles and techniques is the topic that carries 4% weightage and there are other related topics as well. The pattern and weightage of all three sections (organic, inorganic and physical chemistry) of chemistry remains unchanged every year.

ambar ahirawar
What is the weightage of physical chemistry?
manika gupta

Hi, Out of a total 720 marks (180 questions), NEET Chemistry comprises 180 marks (45 Questions). Physical Chemistry consists of 13 questions of 52 marks. For more information, please refer to the following, NEET Weightage.

kunal thakrar
How many questions are asked based on thermodynamics?
devnath tiwary

Dear Kunal Thakrar

Greetings from Collegedunia. There will be 2 questions are asked from the topic Thermodynamics of Physics and it carries a weightage of 9% of marks out of 25% weightage in Physics and overall 180 marks questions. For more details, kindly go through this link – NEET Physics Paper Analysis

What is the weightage of chemistry?
gurpreet singh

Hi Musheshraaj

Click Here to know the weightage of Chemistry 

puja sao
Shall I focus more on inorganic or organic chemistry?
swati srivastava

Hi Puja, you must focus on both but more on organic. For more details visit: NEET EXAM

sandesh kumar
Which portion has more weightage? Organic or inorganic?
manika gupta

Hi, Actually, there is no fixed weightage for the chemistry section. The weightage of all the 3 portions(organic, inorganic and physical) is approximately the same.