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Piyush Dixit
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Updated on Oct 9, 2025 15:46 IST
Many coaching institutes like Allen, Aakash, Resonance will release 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 this year. After the completion of the NEET exam, some top coaching institutes like Allen, Resonance, Akash, Sri Chaitanya, and Pathfinder released unofficial NEET 2025 Chemistry answer key. The Allen released NEET chemistry answer key for set 45 while the Resonance and Aakash released the NEET answer key 2025 for code 48. Students can check the NEET Chemistry answer key 2025 pdf given below.

NEET 2025 Chemistry Question Paper & Answer Key PDF by Allen

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Q:   I want to select English as the language of my NEET question paper. Which city should I choose?
A:

You can choose any exam centre of NEET if you have opted for English medium question paper. English is available at all centres across the country. English is a universal language and the NEET question paper medium. The exam city selection option becomes limited once candidates choose a regional language, except Hindi. Apart from the medium of the question factor, the other factor that plays a role in the NEET exam centre city selection is the permanent and present address selected by candidates during the application process.

Q:   Will marks be deducted for unanswered questions in NEET?
A:

According to the NEET exam pattern, there will be no deduction of marks for unanswered questions. Such questions will not be taken into consideration while calculating the total marks of a candidate. Hence, if candidates are not sure about the answer of a question, it is better to leave it unattempted rather than doing a guess work, to avoid negative marking. Also, candidates are advised to revise the NEET exam sheet or OMR sheet thoroughly before submitting it to the invigilators to avoid negative marking due to silly mistakes.

Q:   What type of questions are there in the NEET question papers?
A:

The question types in the NEET question paper is objective and multiple-choice type. Each question carries four answer options. The difficulty level of the questions range from moderate to tough. The questions are asked from the prescribed NEET syllabus. Since NEET is a paper-pencil-based test (PBT), test-takers are given OMR sheet wherein they have to mark the correct answer option through blue or black ballpoint pen provided at the exam centre. While leaving the exam centre, candidates will have to submit the test booklet or the OMR sheet and rough sheet booklet to the invigilator. They will be allowed to carry the NEET question paper with them, outside the exam hall.

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NEET 2025 Chemistry Answer Key by Pathfinder

The exam comprised 200 questions, with 50 questions from the 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.

Table of contents
  • NEET Chemistry Answer Key PDF Download
  • Accessing the 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

-

NEET Chemistry Question Paper 2025 Analysis

Q:   How many Sets are there in the NEET question paper?
A:

There are generally four Sets of NEET question papers, which are further segregated into six parts. However, in NEET 2025, there were four sets of the NEET question paper, which were named as 45, 46, 47, and 48, and these were not further divided into six subsets, which was followed till the previous year. The names of the NEET 2024 question paper Sets and codes are Q, R, S and T. For the NEET 2024 re-exam, the question paper sets were A, B, C and D. The multiple Sets and codes in the NEET question papers ensure that there is no malpractice in the conduct of the exam. The names of the Sets and codes of the regional NEET question papers are different from the English ones. While distributing the question papers of NEET invigilators had to ensure that they did not give the same set of question papers to two consecutive candidates. Once candidates are given the NEET question paper by invigilators, they need to check whether the question paper and test booklet, or answer sheet, is of the same code. In case of a mismatch, they need to bring the matter to the invigilator's notice. In case they submit the NEET test booklet with a different code from that of the NEET question paper, their exam will stand cancelled.

Q:   What is the total number of unique NEET question papers printed in a year?
A:

Every year, NTA prepares multiple sets of NEET question papers to avoid malpractices. The NEET question papers have four sets, which are further segregated into six sets. Hence, there are a total of 24 unique NEET question papers which are printed by NTA. However, the questions are same, but the arrangement of the sections and questions are different.  

Q:   My medium of paper is Hindi. It means all questions will come in Hindi language?
A:

According to NEET pattern, the question paper for the candidates who have chosen Hindi as the medium will be bilingual. The second language of the question paper will be English. In case candidates have any doubts regarding a particular question or term, they can refer to the English questions. Candidates choosing the NEET question paper medium as Hindi must ensure that they have received the Hindi language question paper in the exam hall. In case they receive English or any other regional language question paper, they must report the matter to the invigilator and get it changed immediately. In case they start solving the NEET question paper of a different language and report it later, it may be considered redundant.

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%

Accessing the NEET 2025 Chemistry Question Paper PDF

The chemistry section in the NEET question paper was conducted in multiple sets this year to prevent malpractises. Though the questions were same but they were jumbled up from top to bottom in different orders. This year NEET chemistry question paper was tougher compare to the last year hence to score good marks in this section was difficult. The official NEET 2025 question paper PDF is released by National Testing Agency (NTA) on the official website around 2-3 months after the conclusion of the exam. 

NEET 2025 Marking Scheme

In order to calculate the exact score, students must know the NEET marking scheme. Each question carries a maxium 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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About the Author
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Piyush Dixit
Deputy Manager

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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