NEET UG 2023 · Chemistry · 50 questions

NEET 2023 Chemistry, question by question

The NEET 2023 Chemistry section had 50 questions from 29 chapters: 19 easy, 30 medium and 1 hard. 38% were easy, 9 points below the 2017–2026 average for Chemistry, and 28 (56%) came from Class 12. Aldehydes, Ketones and Carboxylic Acids had the most, 3 questions.

Updated 2026-10-08

Questions: 50; 25% of the paper
Chapters asked: 29; 1 usual chapter skipped
Easy: 38%; 2017–2026 average 47%
From Class 12: 56%; 2017–2026 average 54%

The section

What Chemistry asked in 2023

Class balance, difficulty and the form of the questions. Bars below compare Chemistry across every paper from 2017–2026.

Class 11 and 12

2228

Class 11
Class 12

Difficulty

1930

Easy
Medium
Hard

New ideas: 35 (70%)
Use a figure: 12

Question pattern

CHEMISTRY 2023

Recall30%
Calculation22%
Application18%
Concept12%
Assertion–reason8%
Match the lists4%
Two statements4%
Figure-based2%

Chapters

The 2023 Chemistry chapter split

All 29 Chemistry chapters asked, and which got more or less than usual: the chapter’s ten-year average per 180 questions. Counts are scaled to 180 questions so years compare fairly.

Every chapter asked

Aldehydes, Ketones and Carboxylic Acids3 · usually 2.6
Haloalkanes and Haloarenes3 · usually 1.5
Alcohols, Phenols and Ethers2 · usually 1.4
Amines2 · usually 1.7
Chemical Bonding and Molecular Structure2 · usually 2.3
Chemical Kinetics2 · usually 2.0
Coordination Compounds2 · usually 2.6
Electrochemistry2 · usually 1.6
Equilibrium2 · usually 2.5
Hydrocarbons2 · usually 2.4
Organic Chemistry - Some Basic Principles and Techniques2 · usually 2.1
States of Matter2 · usually 0.9
Structure of Atom2 · usually 1.5
Surface Chemistry2 · usually 0.8
The d- and f-Block Elements2 · usually 2.0
The p-Block Elements (Class 11)2 · usually 1.3
The p-Block Elements (Class 12)2 · usually 2.2
The s-Block Elements2 · usually 1.1
The Solid State2 · usually 0.9
Thermodynamics2 · usually 3.1
Biomolecules1 · usually 1.4
Chemistry in Everyday Life1 · usually 0.6
Classification of Elements and Periodicity in Properties1 · usually 1.3
Environmental Chemistry1 · usually 0.6
General Principles and Processes of Isolation of Elements1 · usually 0.8
Hydrogen1 · usually 0.6
Polymers1 · usually 0.6
Redox Reactions1 · usually 1.0
Some Basic Concepts of Chemistry1 · usually 1.3

Not asked this year: Solutions.

More than usual

Haloalkanes and Haloarenes+1.23 questions · usually 1.5
Surface Chemistry+1.12 questions · usually 0.8
States of Matter+0.92 questions · usually 0.9
The Solid State+0.92 questions · usually 0.9
The s-Block Elements+0.72 questions · usually 1.1
The p-Block Elements (Class 11)+0.62 questions · usually 1.3
Alcohols, Phenols and Ethers+0.42 questions · usually 1.4
Chemistry in Everyday Life+0.31 question · usually 0.6

Less than usual, or skipped

Solutions−1.6Not asked · usually 1.6
Thermodynamics−1.32 questions · usually 3.1
Coordination Compounds−0.82 questions · usually 2.6
Equilibrium−0.72 questions · usually 2.5
Hydrocarbons−0.62 questions · usually 2.4
Chemical Bonding and Molecular Structure−0.52 questions · usually 2.3
Biomolecules−0.51 question · usually 1.4
Some Basic Concepts of Chemistry−0.41 question · usually 1.3

Every question

All 50 Chemistry questions of NEET 2023

Open any question for the full text, the options and the official answer. “New idea” means no earlier paper had tested it.

Subject

Difficulty

Idea

Find

50 of 50 questions

Chemistry50 questions

19 easy30 medium1 hard

Q51
Taking stability as the factor, which one of the following represents correct relationship?
The p-Block Elements (Class 11)p-Block (Group 13-14)Inert Pair Effect in Group 13
MediumOne-line MCQIdea asked in 2 papers
Q52
Identify the product in the following reaction : Benzenediazonium chloride ( $\mathrm{C_6H_5N_2^+Cl^-}$ )…
Amines Amines and Diazonium Salts Diazonium Replacement Reactions
MediumOne-line MCQ · figureNew idea
Q53
The given compound $\mathrm{C_6H_5{-}CH{=}CH{-}CH(X){-}CH_2CH_3}$ is an example of ________.
Haloalkanes and Haloarenes Nucleophilic Substitution Allylic and Benzylic Reactivity
EasyOne-line MCQ · figureNew ideaIdea asked in 2 papers
Q54
In Lassaigne's extract of an organic compound, both nitrogen and sulphur are present, which gives blood red colour with Fe $^{3+}$ due to…
Organic Chemistry - Some Basic Principles and Techniques Purification, Analysis and Isomerism of Organic Compounds Lassaigne's Test for N and Halogens
MediumOne-line MCQNew ideaIdea asked in 2 papers
Q55
Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R : Assertion A : A reaction can have…
Chemical Kinetics Arrhenius Equation Parameters
MediumAssertion–reasonNew idea
Q56
The right option for the mass of CO $_2$ produced by heating 20 g of 20% pure limestone is (Atomic mass of Ca = 40)…
Some Basic Concepts of Chemistry Mole Concept Percentage Purity of a Sample
EasyNumericalNew idea
Q57
Complete the following reaction : Cyclohexanone [A] $\xrightarrow{\text{HCN}}$ 1-hydroxycyclohexane-1-carbonitrile (cyclohexanone…
Aldehydes, Ketones and Carboxylic Acids Cyanohydrins and Nitrile Hydrolysis
MediumOne-line MCQ · figureNew idea
Q58
Given below are two statements : Statement I : A unit formed by the attachment of a base to 1' position of sugar is known as nucleoside…
Biomolecules Biomolecules (Chemistry)Nucleosides and Nucleotides
MediumTwo statementsNew idea
Q59
A compound is formed by two elements A and B. The element B forms cubic close packed structure and atoms of A occupy 1/3 of tetrahedral…
The Solid State Number and Location of Voids
MediumNumericalIdea asked in 2 papers
Q60
The stability of Cu $^{2+}$ is more than Cu $^{+}$ salts in aqueous solution due to -
The d- and f-Block Elements d- and f-Block Elements Ionisation and Hydration Enthalpy of Transition Metal Ions
MediumOne-line MCQIdea asked in 2 papersAsked the year before
Q61
Match List - I with List - II : List - I | List - II A. Coke | I. Carbon atoms are sp $^3$ hybridised. B. Diamond | II. Used as a dry…
The p-Block Elements (Class 11)p-Block (Group 13-14)Diamond vs Graphite Structure
MediumMatch the listsNew idea
Q62
Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R : Assertion A : Helium is used to…
The p-Block Elements (Class 12)p-Block Elements (Groups 15-18)Noble Gases: Properties and Uses
EasyAssertion–reasonIdea asked in 2 papers
Q63
Some tranquilizers are listed below. Which one from the following belongs to barbiturates?
Chemistry in Everyday Life Tranquilizers and Barbiturates
MediumOne-line MCQNew idea
Q64
Which of the following statements are NOT correct? A. Hydrogen is used to reduce heavy metal oxides to metals. B. Heavy water is used to…
Hydrogen Hydrogen and Water Properties and Uses of Hydrogen and Heavy Water
MediumOtherNew idea
Q65
For a certain reaction, the rate = k[A] $^2$ [B], when the initial concentration of A is tripled keeping concentration of B constant, the…
Chemical Kinetics Rate Law and Order Determination
EasyNumericalNew idea
Q66
Which one is an example of heterogenous catalysis?
Surface Chemistry Surface Chemistry and Colloids Homogeneous and Heterogeneous Catalysis
EasyOne-line MCQIdea asked in 2 papers
Q67
Which one of the following statements is correct?
The s-Block Elements Alkaline Earth Metals Biological Role of Mg and Ca
MediumOne-line MCQIdea asked in 2 papers
Q68
Weight (g) of two moles of the organic compound, which is obtained by heating sodium ethanoate with sodium hydroxide in presence of…
Hydrocarbons Hydrocarbons (Alkanes)Soda Lime Decarboxylation
EasyNumericalIdea asked in 2 papers
Q69
The element expected to form largest ion to achieve the nearest noble gas configuration is :
Classification of Elements and Periodicity in Properties Periodic Properties Radii of Isoelectronic Species
EasyOne-line MCQNew idea
Q70
The correct order of energies of molecular orbitals of N $_2$ molecule, is :
Chemical Bonding and Molecular Structure Molecular Orbital Theory MO Energy Order and s-p Mixing
MediumOne-line MCQNew idea
Q71
Homoleptic complex from the following complexes is :
Coordination Compounds Homoleptic vs Heteroleptic Complexes
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q72
Intermolecular forces are forces of attraction and repulsion between interacting particles that will include : A. dipole - dipole forces.…
States of Matter Ideal Gas Law Types of Intermolecular Forces
EasyOtherNew idea
Q73
The number of $\sigma$ bonds, $\pi$ bonds and lone pair of electrons in pyridine, respectively are :
Organic Chemistry - Some Basic Principles and Techniques Resonance and Mesomerism Non-Participating Lone Pair in Pyridine
MediumOne-line MCQNew idea
Q74
Select the correct statements from the following : A. Atoms of all elements are composed of two fundamental particles. B. The mass of the…
Structure of Atom Quantum Numbers Fundamental Particles and Early Atomic Models
EasyOtherNew idea
Q75
Identify product (A) in the following reaction : 1-[3-(3-acetylcyclohexyl)phenyl]ethan-1-one (a cyclohexane ring bearing a COCH $_3$ group,…
Aldehydes, Ketones and Carboxylic Acids Clemmensen and Wolff-Kishner Reduction
EasyOne-line MCQ · figureNew idea
Q76
Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R : Assertion A : In equation…
Electrochemistry Nernst Equation Gibbs Free Energy and EMF
MediumAssertion–reasonIdea asked in 2 papers
Q77
Which amongst the following options is correct graphical representation of Boyle's Law?
States of Matter Ideal Gas Law Boyle's Law Isotherm Graphs
MediumFigure-basedNew idea
Q78
The relation between $n_m$ , ( $n_m$ = the number of permissible values of magnetic quantum number (m)) for a given value of azimuthal…
Structure of Atom Quantum Numbers Magnetic Quantum Number (ml)
EasyOne-line MCQNew idea
Q79
The conductivity of centimolar solution of KCl at 25°C is 0.0210 ohm $^{-1}$ cm $^{-1}$ and the resistance of the cell containing the…
Electrochemistry Electrolytic Conductance and Electrolysis Conductivity and Cell Constant
EasyNumericalNew idea
Q80
Consider the following reaction and identify the product (P). $\mathrm{CH_3-CH(CH_3)-CH(OH)-CH_3}$ (3-Methylbutan-2-ol)…
Haloalkanes and Haloarenes Nucleophilic Substitution Carbocation Rearrangements
MediumOne-line MCQ · figureNew idea
Q81
Which amongst the following molecules on polymerization produces neoprene?
Polymers Neoprene and Buna Rubbers
EasyOne-line MCQ · figureNew idea
Q82
Amongst the following, the total number of species NOT having eight electrons around central atom in its outer most shell, is…
Chemical Bonding and Molecular Structure VSEPR Theory Exceptions to the Octet Rule
MediumOne-line MCQNew idea
Q83
Amongst the given options which of the following molecules / ion acts as a Lewis acid?
Equilibrium pH and Buffer Solutions Lewis Acids and Bases
EasyOne-line MCQNew idea
Q84
Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R : Assertion A : Metallic sodium…
The s-Block Elements s-Block Elements Solution in Liquid Ammonia
EasyAssertion–reasonNew idea
Q85
Which of the following reactions will NOT give primary amine as the product?
Amines Amines and Diazonium Salts Reduction Products of Cyanides and Isocyanides
MediumOne-line MCQNew idea
Q86
Which of the following statements are INCORRECT? A. All the transition metals except scandium form MO oxides which are ionic. B. The…
The d- and f-Block Elements d- and f-Block Elements Oxides of Transition Metals
HardOtherNew idea
Q87
Consider the following reaction : $\mathrm{C_6H_5-CH_2-O-C_6H_5 \xrightarrow[\Delta]{HI} A + B}$ (benzyl phenyl ether) Identify products A…
Alcohols, Phenols and Ethers Alcohols and Phenols Cleavage of Ethers by HI
MediumOne-line MCQ · figureIdea asked in 3 papers
Q88
Which amongst the following options is the correct relation between change in enthalpy and change in internal energy?
Thermodynamics Enthalpy and Hess's Law Relation Between dH and dU
EasyOne-line MCQNew idea
Q89
What fraction of one edge centred octahedral void lies in one unit cell of fcc?
The Solid State Number and Location of Voids
MediumOne-line MCQIdea asked in 2 papers
Q90
Given below are two statements : Statement I : The nutrient deficient water bodies lead to eutrophication. Statement II : Eutrophication…
Environmental Chemistry Water Pollution and Eutrophication
EasyTwo statementsNew idea
Q91
Which amongst the following will be most readily dehydrated under acidic conditions ?
Alcohols, Phenols and Ethers Alcohols and Phenols Acid-Catalysed Dehydration of Alcohols
MediumOne-line MCQ · figureNew idea
Q92
Match List - I with List - II : List - I (Oxoacids of Sulphur) | List - II (Bonds) A. Peroxodisulphuric acid | I. Two S-OH, Four S=O, One…
The p-Block Elements (Class 12)p-Block Elements (Groups 15-18)Oxoacids of Sulphur
MediumMatch the listsIdea asked in 2 papers
Q93
Identify the major product obtained in the following reaction : 2-acetylbenzaldehyde (benzene ring with ortho COCH $_3$ and CHO groups) +…
Aldehydes, Ketones and Carboxylic Acids Tollens' and Fehling's Tests
MediumOne-line MCQ · figureNew ideaIdea asked in 2 papers
Q94
Identify the final product [D] obtained in the following sequence of reactions.…
Haloalkanes and Haloarenes Nucleophilic Substitution Reactions of Haloalkanes and Haloarenes with Metals
MediumOne-line MCQ · figureNew idea
Q95
The reaction that does NOT take place in a blast furnace between 900 K to 1500 K temperature range during extraction of iron is :
General Principles and Processes of Isolation of Elements General Principles of Metallurgy Extraction of Iron in the Blast Furnace
MediumOne-line MCQIdea asked in 2 papers
Q96
Pumice stone is an example of -
Surface Chemistry Surface Chemistry and Colloids Types of Colloids
EasyOne-line MCQNew idea
Q97
Which complex compound is most stable?
Coordination Compounds Stepwise and Overall Stability Constants
MediumOne-line MCQNew idea
Q98
Consider the following compounds/species : i. [structure: naphthalene] ii. [structure: cyclopentadienyl anion] iii. [structure:…
Hydrocarbons Hydrocarbons (Alkenes)Aromaticity and Huckel's Rule
MediumOne-line MCQ · figureIdea asked in 2 papersAsked the year before
Q99
The equilibrium concentrations of the species in the reaction $\mathrm{A+B\rightleftharpoons C+D}$ are 2, 3, 10 and 6 mol L $^{-1}$ ,…
Equilibrium Chemical Equilibrium Standard Gibbs Free Energy and Equilibrium Constant
MediumNumericalIdea asked in 2 papers
Q100
On balancing the given redox reaction,…
Redox Reactions Balancing Redox Equations
MediumOne-line MCQIdea asked in 3 papers

Questions from the official NEET UG 2023 paper (NTA). Chapter, topic and idea tags and difficulty are Lumi’s.

Chemistry in every NEET paper

NEET 2023 Physics NEET 2023 Biology The whole 2023 paper Chemistry across ten years