NEET UG 2025 · Chemistry · 45 questions

NEET 2025 Chemistry, question by question

The NEET 2025 Chemistry section had 45 questions from 19 chapters: 16 easy, 25 medium and 4 hard. 36% were easy, 11 points below the 2017–2026 average for Chemistry, and 22 (49%) came from Class 12. Hydrocarbons had the most, 5 questions.

Updated 2026-10-08

Questions: 45; 25% of the paper
Chapters asked: 19; 2 usual chapters skipped
Easy: 36%; 2017–2026 average 47%
From Class 12: 49%; 2017–2026 average 54%

The section

What Chemistry asked in 2025

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

Class 11 and 12

2322

Class 11
Class 12

Difficulty

1625

Easy
Medium
Hard

New ideas: 28 (62%)
Use a figure: 9

Question pattern

CHEMISTRY 2025

Calculation33%
Application18%
Match the lists13%
Recall11%
Concept9%
Two statements9%
Figure-based4%
Assertion–reason2%

Chapters

The 2025 Chemistry chapter split

All 19 Chemistry chapters asked, and which got more or less than usual: the chapter’s ten-year average per 180 questions.

Every chapter asked

Hydrocarbons5 · usually 2.4
Equilibrium4 · usually 2.5
Aldehydes, Ketones and Carboxylic Acids3 · usually 2.6
Amines3 · usually 1.7
Coordination Compounds3 · usually 2.6
Organic Chemistry - Some Basic Principles and Techniques3 · usually 2.1
Solutions3 · usually 1.6
Thermodynamics3 · usually 3.1
Biomolecules2 · usually 1.4
Chemical Bonding and Molecular Structure2 · usually 2.3
Chemical Kinetics2 · usually 2.0
Classification of Elements and Periodicity in Properties2 · usually 1.3
Some Basic Concepts of Chemistry2 · usually 1.3
Structure of Atom2 · usually 1.5
The d- and f-Block Elements2 · usually 2.0
The p-Block Elements (Class 12)2 · usually 2.2
Electrochemistry1 · usually 1.6
Haloalkanes and Haloarenes1 · usually 1.5
Redox Reactions1 · usually 1.0

Not asked this year: Alcohols, Phenols and Ethers, The p-Block Elements (Class 11).

More than usual

Hydrocarbons+2.65 questions · usually 2.4
Equilibrium+1.54 questions · usually 2.5
Solutions+1.43 questions · usually 1.6
Amines+1.33 questions · usually 1.7
Organic Chemistry - Some Basic Principles and Techniques+0.93 questions · usually 2.1
Classification of Elements and Periodicity in Properties+0.72 questions · usually 1.3
Some Basic Concepts of Chemistry+0.72 questions · usually 1.3
Biomolecules+0.62 questions · usually 1.4

Less than usual, or skipped

Alcohols, Phenols and Ethers−1.4Not asked · usually 1.4
The p-Block Elements (Class 11)−1.3Not asked · usually 1.3
Electrochemistry−0.61 question · usually 1.6
Haloalkanes and Haloarenes−0.51 question · usually 1.5
Chemical Bonding and Molecular Structure−0.32 questions · usually 2.3
The p-Block Elements (Class 12)−0.22 questions · usually 2.2
Thermodynamics−0.13 questions · usually 3.1
Chemical Kinetics−0.02 questions · usually 2.0

Every question

All 45 Chemistry questions of NEET 2025

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

45 of 45 questions

Chemistry45 questions

16 easy25 medium4 hard

Q46
The ratio of the wavelengths of the light absorbed by a Hydrogen atom when it undergoes $n = 2 \to n = 3$ and $n = 4 \to n = 6$ …
Structure of Atom Quantum Numbers Single-Electron Species Energy Exception
MediumNumericalIdea asked in 2 papersAsked the year before
Q47
Which of the following statements are true? A. Unlike Ga that has a very high melting point, Cs has a very low melting point. B. On…
Classification of Elements and Periodicity in Properties Periodic Properties Ionization Enthalpy Trends
MediumOtherIdea asked in 3 papersAsked the year before
Q48
Match List I with List II List I (Ion) | List II (Group Number in Cation Analysis) A. $Co^{2+}$ | I. Group-I B. $Mg^{2+}$ | II. Group-III…
Equilibrium Qualitative Inorganic Analysis Group Separation of Cations
MediumMatch the listsIdea asked in 2 papersAsked the year before
Q49
Predict the major product 'P' in the following sequence of reactions - 1-Methylcyclopentene…
Amines Amines and Diazonium Salts Mendius Reduction Reaction
MediumOne-line MCQ · figureNew idea
Q50
Energy and radius of first Bohr orbit of $He^+$ and $Li^{2+}$ are [Given $R_H = 2.18\times10^{-18}$ J, $a_0$ = 52.9 pm]
Structure of Atom Quantum Numbers Single-Electron Species Energy Exception
MediumNumericalIdea asked in 2 papersAsked the year before
Q51
Which of the following are paramagnetic? A. $[NiCl_4]^{2-}$ B. $Ni(CO)_4$ C. $[Ni(CN)_4]^{2-}$ D. $[Ni(H_2O)_6]^{2+}$ E. $Ni(PPh_3)_4$ …
Coordination Compounds Crystal Field Theory Nickel Complex Geometry Trio
MediumOtherIdea asked in 2 papers
Q52
Given below are two statements : Statement I : Like nitrogen that can form ammonia, arsenic can form arsine. Statement II : Antimony…
The p-Block Elements (Class 12)p-Block Elements (Groups 15-18)Group 15 Hydrides and Oxides
MediumTwo statementsNew idea
Q53
Which among the following electronic configurations belong to main group elements? A. [Ne] $3s^1$ B. [Ar] $3d^3 4s^2$ C. [Kr]…
Classification of Elements and Periodicity in Properties Periodic Properties s, p, d, f Block Classification
EasyOtherNew idea
Q54
Dalton's Atomic theory could not explain which of the following?
Some Basic Concepts of Chemistry Mole Concept Laws of Chemical Combination
EasyOne-line MCQNew idea
Q55
Consider the following compounds : $\underline{K}O_2$ , $H_2\underline{O}_2$ and $H_2\underline{S}O_4$ The oxidation states of the…
Redox Reactions Calculating Oxidation Numbers
EasyOne-line MCQIdea asked in 4 papers
Q56
If the half-life ( $t_{1/2}$ ) for a first order reaction is 1 minute, then the time required for 99.9% completion of the reaction is…
Chemical Kinetics First Order 99.9% Completion Shortcut
EasyNumericalNew idea
Q57
The correct order of the wavelength of light absorbed by the following complexes is, A. $[Co(NH_3)_6]^{3+}$ B. $[Co(CN)_6]^{3-}$ C.…
Coordination Compounds Crystal Field Theory Absorbed Wavelength and Splitting Energy
MediumOne-line MCQIdea asked in 2 papers
Q58
Which one of the following compounds can exist as cis-trans isomers?
Hydrocarbons Hydrocarbons (Alkenes)Geometrical Isomerism (Cis/Trans & E/Z)
MediumOne-line MCQNew idea
Q59
Phosphoric acid ionizes in three steps with their ionization constant values $K_{a_1}$ , $K_{a_2}$ and $K_{a_3}$ , respectively, while K is…
Equilibrium pH and Buffer Solutions pH of Polyprotic Acids
MediumOtherNew idea
Q60
Which one of the following reactions does NOT give benzene as the product ?
Hydrocarbons Hydrocarbons (Alkanes)Aromatization (Reforming)
MediumOne-line MCQ · figureNew idea
Q61
If the molar conductivity ( $\Lambda_m$ ) of a 0.050 mol L $^{-1}$ solution of a monobasic weak acid is 90 S cm $^2$ mol $^{-1}$ , its extent…
Electrochemistry Electrolytic Conductance and Electrolysis Degree of Dissociation from Conductivity
MediumNumericalIdea asked in 2 papers
Q62
Given below are two statements : Statement I : A hypothetical diatomic molecule with bond order zero is quite stable. Statement II : As…
Chemical Bonding and Molecular Structure Molecular Orbital Theory Bond Order, Stability and Bond Length
EasyTwo statementsNew idea
Q63
Out of the following complex compounds, which of the compound will be having the minimum conductance in solution?
Coordination Compounds Werner's Theory: Molar Conductivity Ranking
EasyOne-line MCQNew ideaIdea asked in 2 papers
Q64
Match List - I with List - II List-I | List-II A. $XeO_3$ | I. $sp^3d$ ; linear B. $XeF_2$ | II. $sp^3$ ; pyramidal C. $XeOF_4$ | III.…
The p-Block Elements (Class 12)p-Block Elements (Groups 15-18)Xenon Fluorides and Oxides
MediumMatch the listsIdea asked in 2 papers
Q65
$C(s) + 2H_2(g) \to CH_4(g)$ ; $\Delta H = -74.8$ kJ mol $^{-1}$ Which of the following diagrams gives an accurate representation of the…
Thermodynamics Enthalpy and Hess's Law Reaction Enthalpy from Energy Profiles
EasyFigure-basedNew idea
Q66
Match List - I with List - II List-I (Example) | List-II (Type of Solution) A. Humidity | I. Solid in solid B. Alloys | II. Liquid in gas…
Solutions Solutions and Colligative Properties Types of Solutions
EasyMatch the listsNew idea
Q67
The correct order of decreasing basic strength of the given amines is :
Amines Amines and Diazonium Salts Basicity Trends in Amines
MediumOne-line MCQNew idea
Q68
Among the following, choose the ones with equal number of atoms. A. 212 g of $Na_2CO_3$ (s) [molar mass = 106 g] B. 248 g of $Na_2O$ (s)…
Some Basic Concepts of Chemistry Mole Concept Counting Atoms in Polyatomic Molecules
MediumOtherNew idea
Q69
Match List I with List II. List I (Name of Vitamin) | List II (Deficiency disease) A. Vitamin $B_{12}$ | I. Cheilosis B. Vitamin D | II.…
Biomolecules Biomolecules (Chemistry)Vitamin Deficiency Diseases
EasyMatch the listsIdea asked in 2 papers
Q70
The correct order of decreasing acidity of the following aliphatic acids is :
Aldehydes, Ketones and Carboxylic Acids Acidity of Carboxylic Acids
EasyOne-line MCQNew idea
Q71
Given below are two statements : Statement I : Ferromagnetism is considered as an extreme form of paramagnetism. Statement II : The number…
The d- and f-Block Elements d- and f-Block Elements Magnetic Moment and Colour of d- and f-Block Ions
MediumTwo statementsIdea asked in 5 papersAsked the year before
Q72
Match List I with List II List I (Mixture) | List II (Method of Separation) A. $CHCl_3 + C_6H_5NH_2$ | I. Distillation under reduced…
Organic Chemistry - Some Basic Principles and Techniques Purification, Analysis and Isomerism of Organic Compounds Types of Distillation
EasyMatch the listsIdea asked in 2 papers
Q73
For the reaction $A(g) \rightleftharpoons 2B(g)$ , the backward reaction rate constant is higher than the forward reaction rate constant by…
Equilibrium Chemical Equilibrium Equilibrium and Rate Constants
MediumNumericalNew idea
Q74
Given below are two statements : Statement I : Benzenediazonium salt is prepared by the reaction of aniline with nitrous acid at 273 - 278…
Amines Amines and Diazonium Salts Synthesis of Iodobenzene from Diazonium
MediumTwo statementsNew idea
Q75
How many products (including stereoisomers) are expected from monochlorination of the following compound? $(CH_3)_2CH-CH_2-CH_3$
Hydrocarbons Hydrocarbons (Alkanes)Free Radical Halogenation
MediumOne-line MCQ · figureNew idea
Q76
Among the given compounds I-III, the correct order of bond dissociation energy of C–H bond marked with * is :
Hydrocarbons Hydrocarbons (Alkynes)Alkyne Structure and Hybridization
HardFigure-basedNew idea
Q77
Which one of the following compounds does not decolourize bromine water?
Hydrocarbons Hydrocarbons (Alkenes)Bromine Water Test for Unsaturation
EasyOne-line MCQ · figureNew idea
Q78
The major product of the following reaction is : $C_6H_5COCH_2CH_2CN \xrightarrow{\text{(i) CH}_3\text{MgBr (excess); (ii) H}_3\text{O}^+}$
Aldehydes, Ketones and Carboxylic Acids Grignard Addition to Carbonyls
HardOne-line MCQ · figureIdea asked in 2 papers
Q79
Which of the following aqueous solution will exhibit highest boiling point?
Solutions Solutions and Colligative Properties Boiling-Point Elevation and van't Hoff Factor
EasyOne-line MCQNew idea
Q80
Match List - I with List - II List-I | List-II A. Haber process | I. Fe catalyst B. Wacker oxidation | II. $PdCl_2$ C. Wilkinson catalyst…
The d- and f-Block Elements d- and f-Block Elements Transition Metals as Catalysts
MediumMatch the listsNew idea
Q81
5 moles of liquid X and 10 moles of liquid Y make a solution having a vapour pressure of 70 torr. The vapour pressures of pure X and Y are…
Solutions Solutions and Colligative Properties Positive and Negative Deviations
MediumOne-line MCQIdea asked in 3 papers
Q82
Sugar 'X' A. is found in honey. B. is a keto sugar. C. exists in α and β - anomeric forms. D. is laevorotatory. 'X' is :
Biomolecules Biomolecules (Chemistry)Monosaccharide Structure and Anomers
MediumOne-line MCQNew idea
Q83
Identify the suitable reagent for the following conversion. $C_6H_5COOCH_3 \to C_6H_5CHO$
Aldehydes, Ketones and Carboxylic Acids Partial Reduction to Aldehydes
MediumOne-line MCQ · figureNew idea
Q84
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) :…
Haloalkanes and Haloarenes Nucleophilic Substitution Leaving Group Ability
EasyAssertion–reason · figureNew idea
Q85
The standard heat of formation, in kcal/mol of $Ba^{2+}$ is : [Given : standard heat of formation of $SO_4^{2-}$ ion (aq) = – 216…
Thermodynamics Enthalpy and Hess's Law Hess's Law Application
MediumNumericalNew idea
Q86
Total number of possible isomers (both structural as well as stereoisomers) of cyclic ethers of molecular formula $C_4H_8O$ is :
Organic Chemistry - Some Basic Principles and Techniques Purification, Analysis and Isomerism of Organic Compounds Counting Isomers
HardOne-line MCQNew idea
Q87
Identify the correct orders against the property mentioned A. $H_2O > NH_3 > CHCl_3$ – dipole moment B. $XeF_4 > XeO_3 > XeF_2$ – number…
Chemical Bonding and Molecular Structure VSEPR Theory Molecular Polarity
HardOtherIdea asked in 2 papers
Q88
Higher yield of NO in $N_2(g) + O_2(g) \rightleftharpoons 2NO(g)$ can be obtained at [ΔH of the reaction = + 180.7 kJ mol $^{-1}$ ] A.…
Equilibrium Chemical Equilibrium Le Chatelier: Temperature Effect
EasyOtherNew idea
Q89
If the rate constant of a reaction is 0.03 s $^{-1}$ , how much time does it take for 7.2 mol L $^{-1}$ concentration of the reactant to get…
Chemical Kinetics First Order Integrated Rate Law
MediumNumericalIdea asked in 4 papers
Q90
Which one of the following reactions does NOT belong to “Lassaigne's test”?
Organic Chemistry - Some Basic Principles and Techniques Purification, Analysis and Isomerism of Organic Compounds Lassaigne's Test for N and Halogens
EasyOne-line MCQIdea asked in 2 papers

Questions from the official NEET UG 2025 paper (NTA). Chapter, topic and idea tags and difficulty are Lumi’s.

Chemistry in every NEET paper

NEET 2025 Physics NEET 2025 Biology The whole 2025 paper Chemistry across ten years