If you want to score good marks in the chemistry section of NEET 2021, it is necessary to know what chapters are important for the exam and to know what weightage each chapter carries.
As soon as you know which chapters are important, you can dedicate more time to them.
Do or die chapters in physics indicate which chapters need more concentration to be studied and, therefore, hold more weight in the NEET examination.
For those seeking admission to MBBS and BDS, the NTA is responsible for organizing the NEET UG exam. The NTA will also set the pattern for NEET. In order to understand the structure of the NEET exam paper, it is advisable for candidates to go through the exam pattern completely.
Most Important Chapters in NEET Chemistry [Class 11]:
The following table summarizes the questions that appeared in the chemistry part in each of the 16 AIPMT/NEET exams completed between 2008 and 2020.
In this way, you will be able to get an idea of the pattern of questions that have been asked from various topics. It is crucial to have knowledge of important topics in chemistry as this will strengthen the preparation for the test.
Chapter 1: Some Basic Concepts of Chemistry
Topic Name
Number of questions
Concentration based problem
11
Moles, atoms and electrons
10
Equation based problem
6
Limiting reagent
2
Emperical/molecular formula
1
Total number of questions
30
Chapter 2: Structure of Atom
Topic Name
Number of questions
AUFBAU Principle
12
Quantum numbers
9
Shell/subshell
5
Bohr’s theory
3
Heisenberg uncertainty principle
3
Planck’s theory
3
Nodal plane
2
de Broglie equation
1
Hydrogen spectra
1
Number of E/P/N
1
Total number of questions
40
Chapter 3: Classification of Elements and Periodicity in Properties
Topic Name
Number of Questions
Atomic size
8
Ionisation enthalpy (IE)
8
Nature of compound
5
Stability of compound
5
Electron affinity (EA)
3
Electronic configuration
3
Modern periodic table and periodicity
3
Electronegativity
1
Total number of questions
36
Chapter 4: Chemical Bonding and Molecular Structure
Topic Name
Number of Questions
Hybridisation
31
M.O.T
19
Polarity
8
V.S.E.P.R
8
Types of bonding
7
Acid, base and Fajan’s rule
6
Octate and isoelectronics
6
Covalent bonding
3
Vander Waal force and hydrogen bonding
2
Lattice/Hydration energy
1
Total number of questions
90
Chapter 5: States of Matter
Topic Name
Number of Questions
Kinetic theory of gas
6
Gas law
3
Graham’s law
3
Ideal gas law
3
Compressibility factor
2
Dalton’s law
2
Vander Wall correction
1
Total number of questions
20
Chapter 6: Thermodynamics
Topic Name
Number of Questions
Gibbs energy change
16
Thermochemistry
8
Enthalpy and Internal energy
6
Spontaneity and Entropy
5
2nd Law and work done
3
First Law of Thermodynamics
2
Thermodynamics’ properties and process
2
Extensive and Intensive Properties
1
Hess’s Law
1
Total number of questions
44
Chapter 7: Equilibrium
Topic Name
Number of Questions
Kp, Kc – amd Factors Affecting them
16
Acids & Bases – Definitions and Classification
12
pH Calculation
10
Solubility Product
9
Buffer
8
Introduction to Equilibrium
4
Common Ion Effect
2
Ki for Acid, Base and Salt
2
Le for Acid, Base and Salt
2
Salt Hydrolysis
2
Total number of questions
67
Chapter 8: Redox Reactions
Topic Name
Number of Questions
Oxidation and Reducing Agents (Oxidation Number)
13
EMF -Electromotive force and Electrode potential
2
Introduction to Redox
2
Balancing an Equation
1
Equivalent Weight and Normality
1
Total number of questions
19
Chapter 9: Hydrogen
Topic Name
Number of Questions
H2O2 (Hydrogen Peroxide)
3
Hard and Soft Water
3
Preparation and Properties
1
Total number of questions
7
Chapter 10: The s-Block Elements
Topic Name
Number of Questions
Chemical Properties
10
Some Important Compounds of Ca and Na
5
Reasoning
4
Biological Importance of Na, Mg, Ca and other elements
2
Physical Properties
2
Total number of questions
23
Chapter 11: The p-Block Elements
Topic Name
Number of Questions
Carbon Family – Chemical and Physical Properties
7
Boron Family – Chemical and Physical Properties
5
Compounds of Silicon, Structure of Silicon Dioxide
3
Allotropes of Carbon, Structure of Diamond and Graphite
1
Compounds of Boron, Structure and Reactions of Diborane/Boric Acid
1
Total number of questions
17
Chapter 12: Organic Chemistry – Some Basic Principles and Techniques
Topic Name
Number of Questions
Nomenclature
11
Nucleophile and Electrophile
11
Electron Displacement Effects
10
Reaction Intermediates and their Stability
8
Stereo Isomer
8
Acidic and Basic Character
7
Shape, Hybridisation and Structure of Carbon Compounds
4
Structural Isomer
4
Conformational Isomers
3
Purificatioon of Organic Compounds, Chromatography and Distillation
2
Qualitative Analysis of Organic Compounds
2
Quantitative Analysis of Organic Compounds
2
SN, Addition and Elimination Reactions
2
Total number of questions
74
Chapter 13: Hydrocarbons
Topic Name
Number of Questions
Alkanes, Alkenes and Alkynes -Chemical Properties
21
Alkanes, Alkenes and Alkynes – Nomenclature, Isomerism and Mechanism
11
Alkanes, Alkenes and Alkynes – Methods of preparation
6
Aromatic Hydrocarbons – Bnezene – Structure, Preparation and Chemical Reactions
6
Aromatic Hydrocarbons – Mechanism
2
Alkanes, Alkenes and Alkynes – Conformations and Hybridisation
1
Total number of questions
47
Chapter 14: Environmental Chemistry
Topic Name
Number of Questions
Air Pollution – Greenhouse Effect
2
Air Pollution – Smog
2
Air Pollution – Gaseous Pollutants – Oxides of C and N
1
Water Pollution – Biological Oxygen Demand
1
Total number of questions
6
Most Important Chapters in NEET Chemistry [Class 12]:
Chapter 1: The Solid State
Topic Name
Number of Questions
Density/Formula/Packing Fraction
12
Voids and radius ratio/coordination number
8
Introduction and Type of Crystal System
5
Imperfections in Solids
4
Total number of questions
29
Chapter 2: Solutions
Topic Name
Number of Questions
Depression of Freezing point
8
Introduction/ Colligative properties
6
Elevation of Boiling point
3
Raoult’s Law
3
Relative Lowering of Vapour Pressure/ Vapour Pressure
3
Van’t Hoff Factor
3
Osmosis and Osmotic Pressure
2
Azeotrope
1
Concentration Term and Henry’s Law
1
Dalton’s Law of Partial Pressure/Henry’s Law
1
Total number of questions
31
Chapter 3: Electrochemistry
Topic Name
Number of Questions
Faraday’s Law of Electrolysis
9
Electrode Potential/ Introduction
7
Relation between Cell Potential and Gibbs Energy and Kc/pH
