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MHT-CET Chemistry, 2021 to 2025: what the 2025 paper moved, shift by shift

The 2025 papers weighted Chemistry differently and made it less easy, and neither shows unless you date your practice papers. Everything below is measured across 42 papers and 2074 questions from 2021 to 2025.

years analysed
5
papers
42
questions tagged
2074
chapters tracked
30

Read this before you read a number on this page

MHT-CET is a multi-shift exam and the paper count per year is uneven — 2021 = 1 paper, 2022 = 1 paper, 2023 = 16 papers, 2024 = 11 papers, 2025 = 13 papers. A raw question count therefore means nothing across years: a chapter can carry more questions in a 16-paper year than in a 13-paper year while sitting at exactly the same weight per paper. Every comparable figure below is a questions-per-paper rate, and every window below names its own paper count.

The headline: one chapter halved, three rose

Prep off 2023-24 papers alone and you give Structure of Atom twice the hours it now earns, and too few to three chapters that grew.

Falling: Structure of Atom

2.00 q/paper across 2023-2024 (27 papers), then 1.00 q/paper across the 13 papers of 2025.

Falling: Modern Periodic Table

0.56 q/paper across 2023-2024 (27 papers), then 0.23 q/paper across the 13 papers of 2025.

Rising: Some Basic Concepts of Chemistry

1.15 q/paper across 2023-2024 (27 papers), then 1.54 q/paper across the 13 papers of 2025.

Rising: Elements of Group 16, 17 and 18

1.00 q/paper across 2023-2024 (27 papers), then 1.38 q/paper across the 13 papers of 2025.

Rising: Green Chemistry and Nanochemistry

0.67 q/paper across 2023-2024 (27 papers), then 1.00 q/paper across the 13 papers of 2025.

Verified chapter drift

The 5 chapters with a story worth spelling out in words. The full grid for every chapter is two sections below, derived from the bank rather than estimated; this list is the narrative, and the grid is its receipt. Each window names its own paper count, because that is what makes the two rates comparable.

  • Structure of Atom

    Softening
    Earlier window — 2023-2024
    2.00 q/paperquestions per paper
    54 q over 27 papers
    Later window — 2025
    1.00 q/paperquestions per paper
    13 q over 13 papers

    Lifetime: 70 questions · 1% HARD

    Halved: two questions a paper for two years, then one across 2025. Still set every paper — cut its hours, not the chapter.

  • Some Basic Concepts of Chemistry

    Rising
    Earlier window — 2023-2024
    1.15 q/paperquestions per paper
    31 q over 27 papers
    Later window — 2025
    1.54 q/paperquestions per paper
    20 q over 13 papers

    Lifetime: 51 questions · 2% HARD

    Up by a third. Mole arithmetic, and the same arithmetic every Calculate chapter uses.

  • Elements of Group 16, 17 and 18

    Rising
    Earlier window — 2023-2024
    1.00 q/paperquestions per paper
    27 q over 27 papers
    Later window — 2025
    1.38 q/paperquestions per paper
    18 q over 13 papers

    Lifetime: 48 questions · 2% HARD

    Up from one question a paper to about one and a half — recall of trends and oxoacids, 2% HARD.

  • Green Chemistry and Nanochemistry

    Rising
    Earlier window — 2023-2024
    0.67 q/paperquestions per paper
    18 q over 27 papers
    Later window — 2025
    1.00 q/paperquestions per paper
    13 q over 13 papers

    Lifetime: 33 questions · 0% HARD

    A question in every 2025 paper, never HARD. Below the playbook line on the 2024-25 average, above it on 2025 alone.

  • Modern Periodic Table

    Softening
    Earlier window — 2023-2024
    0.56 q/paperquestions per paper
    15 q over 27 papers
    Later window — 2025
    0.23 q/paperquestions per paper
    3 q over 13 papers

    Lifetime: 18 questions · 0% HARD

    Falling: three questions in all of 2025. Its trends still matter because every block chapter borrows them.

Every rate on this list is recomputed from the grid below by a test, so the narrative cannot drift from the evidence after the next ingest.

What every chapter is worth, per paper

All 30 chapters across all 42 papers, as questions per paper. Every column is divided by its own year’s paper count, so the cells compare directly even though the years do not have the same number of papers. Read a row left-to-right to see a chapter gain or lose weight; read the bottom row to confirm each year still adds up to a whole paper.

Questions per paper by chapter and year. Each column is divided by that year’s own paper count. Columns with a single paper are muted because they cannot be read as a trend.
Chapter20212022202320242025
n=1 ·n=1 ·n=16n=11n=13
Solutions and Colligative Properties3.003.003.063.363.00
Solid State2.003.003.253.093.00
Alcohols, Phenols and Ethers4.003.002.882.823.23
Chemical Kinetics2.003.003.003.003.00
Electrochemistry2.003.003.002.822.92
Ionic Equilibria2.003.002.882.913.00
Chemical Thermodynamics and Energetics2.003.002.812.913.00
Aldehydes, Ketones and Carboxylic Acids4.003.002.562.732.38
Biomolecules2.003.001.942.182.15
Coordination Compounds2.002.002.062.182.08
Introduction to Polymer Chemistry2.003.001.942.002.08
Amines2.001.001.941.822.08
Halogen Derivatives of Alkanes1.002.002.001.552.08
Transition and Inner Transition Elements2.002.001.881.731.77
Structure of Atom2.001.002.061.911.00
Chemical Bonding and Molecular Structure2.003.001.751.181.38
Some Basic Concepts of Chemistry0.000.001.191.091.54
Elements of Group 16, 17 and 182.001.000.881.181.38
Redox Reactions1.001.001.000.911.23
Surface Chemistry2.001.000.880.821.00
Basic Principles of Organic Chemistry2.001.000.880.910.85
Elements of Group 1 and 21.001.000.811.000.85
Alkanes0.000.000.811.000.85
Alkenes0.002.000.940.730.77
Aromatic Compounds1.001.000.631.180.77
Green Chemistry and Nanochemistry2.000.000.810.451.00
States of Matter2.001.000.750.640.69
Modern Periodic Table0.000.000.500.640.23
Alkynes1.000.000.130.360.23
Elements of Group 13, 14 and 150.000.000.060.090.08
Whole paper50.050.049.349.249.6

The greyed columns are 2021 and 2022 — one paper each. Their numbers are real, but one paper’s chapter mix is that paper, not the exam’s shape, so do not read a line through them. A 0.00 is a measured zero: the chapter was on no paper that year.

Every paper, every chapter

The rates above come from this: one column per real sitting, 42 of them, holding 2,074 questions. Raw counts do not compare across YEARS here, because the paper counts differ — but they compare perfectly across COLUMNS, because every column is a single paper of about 49 questions. The footer row proves it: each column sums to its paper’s own length. Hover a column number for its date and shift. Columns are papers by date and shift, not source files: a question re-dated to the paper it came from is counted in that paper.

Chapter'21'22'23'24'25
1112345678910111213141516123456789101112345678910111213
Solutions and Colligative Properties333333333333343333343333434343333333333333
Solid State233433333343443333343333333333333333333333
Alcohols, Phenols and Ethers433122324434343323242442323233333435135324
Chemical Kinetics233333333333333333333342333333333333333333
Electrochemistry233333333343332333333332333323333333332333
Ionic Equilibria233333333323332333332333333333333333333333
Chemical Thermodynamics and Energetics233333333333232323324333233333333333333333
Aldehydes, Ketones and Carboxylic Acids434244343013312232323232333332214322331242
Biomolecules232222222222212222222323222223322222222222
Coordination Compounds222222222322222222222322222232222322222222
Introduction to Polymer Chemistry232022222222222322222222222222222222222322
Amines212222233112221222222122231212222122322223
Halogen Derivatives of Alkanes121122312112314224133111132012323213421121
Transition and Inner Transition Elements222122222221222222332112112122122221221222
Structure of Atom213222322212222222222220322221111111111111
Chemical Bonding and Molecular Structure231123223212211122112121111111132111111221
Some Basic Concepts of Chemistry001211011121212111121211011112111231212121
Elements of Group 16, 17 and 18211101110021211110122111101211211211222021
Redox Reactions111111111111111102001111111211111021112212
Surface Chemistry211111111101111011111010111111111111111111
Basic Principles of Organic Chemistry210221000211012101120100111210211210010210
Elements of Group 1 and 2111111100111012101111110121111101112012100
Alkanes002201000121110011200201112111020111121001
Alkenes020100120220021130000120200211101111001111
Aromatic Compounds111100102110110001103123101101010021002102
Green Chemistry and Nanochemistry201111111101110011001100100111111111111111
States of Matter211011110011001220100111110101111001010111
Modern Periodic Table000010011101010110100001121010100000100001
Alkynes100010000000000100100000011010000000010110
Elements of Group 13, 14 and 15000000000000000010100000000000010000000000
Paper total505050465050504950494850505047495050505050505042505050504949504950505050485049505050

Columns are numbered within each year and ordered by exam date. 2 papers carry no date in our records and sit last in their year rather than at a guessed position; their tooltips say so.

%HARD by year — and why two of these years are not data points

Read the papers column first. 2021 and 2022 are one paper each (50 questions and 50 questions). A single paper’s difficulty split is noise, and those two years must not be read as the start of a trend line. The only readable run is 2023 → 2024 → 2025.

MHT-CET Chemistry difficulty by year: papers, questions, HARD count and HARD share. Years with a single paper are marked as not readable as a trend.
YearPapersQuestionsHARD count% HARD% EASYReads as trend?
202115048%44%No — single paper
202215024%44%No — single paper
202316788172%56%Yes
202411541214%60%Yes
202513645234%42%Yes

HARD barely moved; EASY did. Across the years with real paper counts HARD ran 2023 at 2%, then 2024 at 4%, then 2025 at 4%. The EASY column is where 2025 changed: 56% and 60% in 2023 and 2024, 42% in 2025, as one-glance recall questions gave way to MODERATE ones. Time your mocks on 2025 papers — a 2023 paper makes Chemistry look faster than it now is.

The 4 moves worth acting on

Each of these changes what you should be drilling this week, not just what you should know about the paper.

  • 2025 was not harder — it was less easy: EASY fell from 56% (2023) and 60% (2024) to 42%

    HARD barely moved (2%, 4%, 4%), so a %HARD chart says nothing happened. What moved was the EASY share: questions that used to be one-glance recall became MODERATE — a formula applied, a structure read. Practise 2025 papers for pace: the time a 2023 paper suggests Chemistry needs is an underestimate now.

  • Structure of Atom halved — 2.00 a paper in 2023-24, 1.00 in 2025

    Two questions a paper for two years, then one across all 13 papers of 2025. It is still set in every paper, so keep Bohr's model and the quantum-number rules; just give it half the hours a 2023-24 paper suggests.

  • Some Basic Concepts and Groups 16-18 both rose by a third or more

    Some Basic Concepts went from 1.15 to 1.54 questions a paper and Groups 16-18 from 1.00 to 1.38. The first is mole arithmetic that pays in every Calculate chapter; the second is recall at 2% HARD. Both are cheap hours.

  • Green Chemistry reached a question a paper

    0.67 a paper across 2023-24, then one in every 2025 paper — and it has never produced a HARD question. It sits below the playbook line on the 2024-25 average only because 2024 was light. Read its twelve principles once.

Recommendation: drill 2025 for scope and pace

The newest papers carry the weights you will actually sit — Structure of Atom and Modern Periodic Table down, Some Basic Concepts of Chemistry, Elements of Group 16, 17 and 18, Green Chemistry and Nanochemistry up — and the 2025 pace. Use 2023-24 papers for volume. And remember there is no negative marking in this paper: every question is worth attempting, so the only thing these trends change is what you practise and in what order, never whether you answer.