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Piyush Dixit
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Updated on Jan 7, 2026 17:28 IST
Many coaching institutes like Allen, Aakash, Resonance released the NEET 2025 Chemistry answer key PDF in online mode after the conclusion of the exam. Applicants can check the NEET Chemistry answer key 2025 and calculate their marks. The official NEET chemistry answer key will be released by NTA on the official website.

The NEET 2025 exam was conducted offline across various exam centres in India. Top coaching institutes released the unofficial NEET chemistry answer key PDFs in online mode.

NEET 2025 Chemistry answer key is important to know to calculate the marks after the exam. 22.7 lakh applicants appeared in the NEET 2025 exam in 5,453 exam centres across 566 cities in India and abroad last year. After the completion of the NEET exam, top coaching institutes like Allen, Resonance, Akash, Sri Chaitanya, and Pathfinder released unofficial NEET 2025 Chemistry answer keys. Allen released NEET chemistry subject answer key for set 45, while Resonance and Aakash released the NEET answer key 2025 for code 48. Students can check the NEET Chemistry answer key 2025 pdf released by some top coaching institutes are given below.

NEET 2025 Chemistry Question Paper & Answer Key PDF by Allen

NEET 2025 Question Paper & Answer Key PDF by Resonance

NEET UG Question Paper & Answer Key PDF by Aakash

NEET 2025 Chemistry Answer Key by Sri Chaitanya

NEET 2025 Chemistry Answer Key by Pathfinder

The NEET 2025 exam comprised 200 questions. Out of the total, there were a total of 50 questions from Chemistry section. Students were required to attempt 45 of those chemistry questions. The National Eligibility cum Entrance Test (NEET) is one of the most competitive exams in India for students aspiring to pursue medical and dental courses. By checking the unofficial NEET answer key one can calculate their marks in exam. 

Table of contents
  • NEET Chemistry Answer Key PDF Download
  • NEET Chemistry Question Paper 2025 Analysis
  • Accessing NEET 2025 Chemistry Question Paper PDF
  • NEET 2025 Marking Scheme

NEET Chemistry Answer Key PDF Download

Students can check the NEET Chemistry 2025 answer key released by different coaching institutes from the below mentioned table. 

Coaching Institutes

NEET 2024 Chemistry Answer Key & Solution PDF

SET wise

Resonance

NEET 2025 Question Paper & Answer Key PDF 48

Allen

NEET 2025 Chemistry Question Paper & Answer Key PDF

45

Sri Chaitanya

NEET 2025 Chemistry Answer Key PDF

-

Aakash

NEET UG Question Paper & Answer Key PDF

48

Pathfinder

NEET 2025 Chemistry Answer Key

-

Also Read: NEET 2026 Mock Test Strategy: When to Start & How Many Tests to Take

Q&A Icon
Commonly asked questions
Q:   Will marks be deducted for unanswered questions in NEET?
A: 

No, marks are not deducted for unanswered questions in NEET. However, the NTA applies negative marking of 1 mark for each incorrect answer in the NEET UG examination.

Q:   Are there any optional questions in NEET exam?
A: 

No, the NEET exam or NEET question paper does not have any optional questions. Although there used to be 20 optional questions in total in between the years 2022 and 2024, but 2025 onwards, the optional questions in NEET were removed as part of the revision or change in the NEET exam pattern as per the pre-COVID era. Hence, the NEET 2025 question paper will not carry any optional questions, and will have 360 mandatory questions from Physics, Chemistry and Biology.  

Q:  

Which is the most repeated question in NEET Biology?

A: 

There are various topics or questions which have been repeated the most in NEET Biology section. Have a look at the NEET Biology most repeated questions in past few years below-

  • Respiratory system
  • Digestive enzymes & hormones
  • Sliding filaments theory
  • Mendelian crosses
  • Genetic disorders (Turner, Down, Klinefelter)
  • Photosynthesis
  • Food chains and ecological pyramids
  • Cell organelles and functions

NEET Chemistry Question Paper 2025 Analysis

The topic-wise and unit-wise bifurcation of the Chemistry subject NEET exam is mentioned in the table below. This can also explain about the NEET exam analysis 2025

Unit

Topic

Number of Questions

Weightage of Questions 

Organic Chemistry

Environmental Chemistry - Gaseous Air Pollutants

1

2%

Aromatic Compound - Aromaticity

2

4%

Reaction Mechanism - Solvent, Electrophile, Nucleophile, and Leaving group ability

3

6%

Biomolecule & Polymer-Carbohydrate: Monosaccharide, Disaccharide, Polysaccharide

2

4%

Hydrocarbon Part I - Alkane

1

2%

General Organic Chemistry - Inductive Effect

1

2%

Chemistry in Everyday Life

1

2%

Carboxylic acid and Derivatives - Preparation of Carbonyl Compounds

3

6%

Grignard Reagent

1

2%

IUPAC nomenclature - Fundamental of Organic Chemistry

3

6%

Inorganic Chemistry

Chemical Bonding - Introduction to Bonding and Ionic bond

4

8%

Metallurgy - ORES and method of concentration

2

4%

Periodic Table - Development of Periodic Table, Period, Group and Block

2

4%

S-Block Element - Electronic configuration and Physical Properties of alkali metals

2

4%

P-Block Element (B and C) - Physical and chemical properties of Group 13th elements

1

2%

Coordination Compound - General introduction of complex salts and definitions to be used

2

4%

Hydrogen Compounds - Position of hydrogen in the periodic table; methods of preparation and properties

1

2%

p-Block (Nitrogen and Oxygen) - Physical and Chemical properties of Group 15th elements

1

2%

d-f Block Element - Electronic configuration, atomic and ionic size, density, melting

and boiling points

2

4%

Physical Chemistry

Chemical Equilibrium -Properties of Equilibrium, Law of mass action, Equilibrium constant and its properties, Factors affecting Equilibrium constant, Unit of KC and KP

1

2%

Chemical Kinetics - Rate of reaction, Factors affecting rate of reaction

2

4%

Electrochemistry - Basic Terminology, Construction of Electrochemical Cell and Its

Representation 

2

4%

Gaseous State - Gas Laws (Boyle, Charles, Gaylussac, Avogadro’s Law, Ideal Gas

Equation)

1

2%

Mole Concept - Units, Atoms, Molecules, Atomic mass, Molecular mass, Gram atomic mass, Gram molecular mass, RAM, Average atomic mass

1

2%

Solid State - Basics of Solid State

2

4%

Surface Chemistry - Adsorption

1

2%

Solution Colligative Properties - Concentration Terms

1

2%

Atomic Structure - Cathode, Anode rays, Basic definitions and Rutherford atomic

model

2

4%

Redox Reaction - Calculation of oxidation number

1

2%

 

Thermodynamics - Basic definition

1

2%

Also Read: NEET 2026 Preparation Strategy for Class 11 & 12 Students (Subject-wise Plan)

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Accessing NEET 2025 Chemistry Question Paper PDF

The chemistry section in the NEET question paper was conducted in multiple sets this year to prevent malpractices. Though the questions were the same but they were jumbled up from top to bottom in different orders. This year NEET chemistry question paper was tougher compared to last year hence to score good marks in this section was difficult. The official NEET question paper PDF is released by the National Testing Agency (NTA) on the official website 2-3 months after the conclusion of the exam. 

Q&A Icon
Commonly asked questions
Q:   Do all the Sets of NEET question papers carry the same questions?
A: 

Although the questions are the same in all Sets of the NEET question paper, the order of the sections and questions vary from set to set. The different order of the sections and questions ensure that there is no malpractice conducted during the exam. Even if some questions are absolutely different in separate Sets or languages, the topics and chapters covered and difficulty level remain similar to ensure normalisation. Hence, it can be said that NTA Sets a common question paper carrying 200 questions, after which the questions are distributed across four Sets and six subsets of the NEET question paper. The subjects, and the questions within the subjects are shuffled for each of the NEET question paper Sets. This allows a parity in terms of topics covered and difficulty level, as well as allows avoidance of malpractice.

Q:   What is the correct way of answering the NEET question paper?
A: 
Candidates will be provided with OMR sheets. They will have to shade the correct answer option corresponding to each question uniformly with a ballpoint pen which would be provided to them inside the exam hall. They should fill only one answer option circle, otherwise, the response will be considered as wrong and would result in negative marking. They will have to do the rough work on the NEET question paper, in the space provided. While answering the NEET question paper on the OMR sheet, candidates must be careful that they select the correct question number and fill up the correct answer option. There are cases where candidates solve the question and deduce the correct option, but make a mistake while filling the OMR sheet by not checking the question number or the answer option carefully. Such mistakes can cause a negative marking of one mark.
Q:   Does NTA release all sets of NEET question papers online?
A: 

NTA releases the NEET question papers online on the official website of NTA after the conclusion of the admission process of the academic year. However, NTA does not release the NEET question papers of all languages and sets. The exam authorities primarily release the English language question papers followed by Hindi. Till 2021, NTA had released NEET question papers in all languages. In 2022, only three sets of the NEET English question paper were released. In the years 2023 and 2024, NTA had released only English and Hindi question papers. 

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NEET 2025 Marking Scheme

In order to calculate the exact score, students must know the NEET marking scheme. Each question carries a maximum of 4 marks. For each incorrect answer, 1 mark will be deducted hence applicants must be cautious while attempting the questions. 

 

Marks

For each correct answer in Chemistry subject in NEET exam 

+4

For each incorrect answer in Chemistry subject in NEET exam

-1

 

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Piyush Dixit
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Piyush is a candidate who has deep dived Education sector for more than a decade. Before starting his career as a content creator, he used to take both online as well as offline classes for students preparing for va

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Answered 3 days ago

Candidates can get the NEET 2025 question paper in Tamil medium on this page - NEET Tamil Medium Question Papers. Download the NEET Tamil PYQs for free to practice for the exam.

P

Piyush Bhandari

Contributor-Level 6

Answered 5 days ago

Yes, of course. NEET UG is compulsory for admission to all BDS courses in India (government and private). No alternate way or management admission is available without a valid NEET score. The rule was drawn up so that admission to all dental institutions will be transparent and merit based. Similarl

...Read more

T

Tasbiya Khan

Contributor-Level 10

Answered 5 days ago

No, NEET is not mentioned as a requirement for forensic Science colleges in Mumbai and Navi Mumbai. But, aspirants must have studied Science in Class 12 with a PCB combination. 

S

Syed Aquib Ur Rahman

Contributor-Level 10

Answered a week ago

Yes, you can get the BHMS course with a rank of 300 if you belong to the OBC AI category. This category had the overall cutoff range between 93201 and 74967. Hence, getting a seat for this course with a rank of 300 can be achievable. Students who want admission to the Nehru Homoeopathic Medical Coll

...Read more

N

Neerja Rohatgi

Contributor-Level 10

Answered a week ago

The required marks in NEET would depend entirely on the category you belong to. For the General AI category, the needed rank was 46875. Please remember that the cutoff for other categories will vary. 

To know the required rank for other categories, see the table below.

Category

Nehru Homoeopathic Medical College and Hospital cutoff 2025

General46875
OBC74967
SC230221
ST288873
EWS66693

N

Neerja Rohatgi

Contributor-Level 10

Answered a week ago

The marks required in NEET to qualify for the AYUSH counselling process depend on the category the student belongs to. For the General AI category, students need to secure a rank of at least 46875 to be eligible for a seat. Different categories will have different cutoffs. To know the Nehru Homoeopa

...Read more

N

Neerja Rohatgi

Contributor-Level 10

Answered a week ago

NEET is not mandatory for CG BSc Nursing. Admisison to the BSc Nursing courses in Chhattisgarh is based on the CG Nursing entrance test conducted by CG Vyapam.

V

Vikash Kumar Vishwakarma

Contributor-Level 10

Answered a week ago

Desh Bhagat University NEET cutoff 2025 was concluded with the release of the final round of seat allotment for the BDS course. The cutoff was released for both the AI and HS quotas. 

For all AI quota categories, the overall cutoff varied between 627176 and 1311773 for admission to the BDS course. St

...Read more

N

Neerja Rohatgi

Contributor-Level 10

Answered a week ago

No, NEET-UG is not listed as a compulsory entrance exam for Oriental College of Pharmacy BPharma admissions. The selection of candidates is based on the scores obtained in Class 12 board exams. Thus, candidates can apply for BPharm at Oriental College of Pharmacy as soon as they get their Class 12 b

...Read more

S

Saurabh Khanduri

Contributor-Level 10

Answered a week ago

Candidates can carry any one of the given original photo ID proof to the NEET exam centre on the day of examination-

  • Aadhaar Card
  • Indian Passport Number
  • DigiLocker
  • PAN Card Number
  • Any other valid Government-issued Photo ID Card

NRIs or foreign nationals need to carry their passports as identity proof to t

...Read more

R

Rupali Pruthi

Contributor-Level 10