MSBSHSE Sample Papers for Class 12 Chemistry

What You Get on This Page (and Which Exam Year These Papers Belong To)

This page gives you downloadable MSBSHSE sample papers for Class 12 Chemistry, organised as Set 1, Set 2 and a few additional practice sets, each with solutions. Along with the papers you get a marks-wise blueprint of the theory paper and a chapter-wise weightage table, so you can see how the 70 marks are built and which chapters deserve more of your revision time.

The sets here are prepared for the current exam year [verify] and follow the Maharashtra State Board HSC Chemistry syllabus and paper pattern as it stands now [verify]. If the board has revised the pattern recently, treat the blueprint numbers as indicative and confirm the official format from your textbook or the board circular before your final revision.

Start with one full set under timed conditions, then use the blueprint and weightage tables to plan what to revise before you attempt the next set.

Download MSBSHSE Class 12 Chemistry Sample Papers (Set-wise PDF)

Every paper below is a full-length Chemistry paper built on the current Maharashtra State Board HSC pattern, with solutions attached. The table tells you exactly what each set contains, so you can pick the right one for today's practice.

Set 1: Full-length paper with solutions

Use this first. It covers every unit of the textbook, so it shows you where you stand across the whole syllabus rather than in one chapter. Keep the solutions file closed until the timer stops.

Set 2: Full-length paper with solutions

Keep Set 2 for two to three weeks after Set 1. By then you will have revised the weak chapters your first attempt exposed, and this paper will test whether the revision actually worked.

Additional practice sets

These give you more full-length attempts once Sets 1 and 2 are done. If you finish all of them, move to HSC Chemistry previous year question papers with solutions for real board questions.

One-line plan: download Set 1 now, solve it in one sitting under a 3-hour timer, then save Set 2 for your later revision round.

Saving the PDF on a phone: tap the download link, wait for the file to open in your browser's PDF viewer, then use the share or menu button and choose "Download" or "Save to Files". On Android, files usually land in the Downloads folder; on iPhone, save to the Files app so you can open the paper offline. Keep the question paper and the solutions as two separate files so you do not see the answers by accident while solving.

Before you begin, check the Class 12 Chemistry syllabus page with chapter list and deleted topics so you do not waste time on portions no longer in the course.

Marks-wise Blueprint of the Class 12 Chemistry Paper

The Chemistry theory paper is out of 70 marks and you get 3 hours to write it. The 70 marks are not one block of questions: they are split into fixed question types, each with its own count and mark value. This split is what we mean by the "blueprint". Knowing it in advance tells you how much time each type deserves, instead of finding out in the last 20 minutes that you still have a 4-mark numerical left.

Question types and marks per section

The table below shows how the paper is usually built. Treat the counts as the typical structure, not a guarantee.

Read the numbers as ranges. The board has adjusted the internal count of questions from year to year, so a paper may have nine MCQs one year and eight the next. The total always adds up to 70 [verify].

How the 70 marks are distributed

Two things stand out once you add the columns. First, short-answer questions carry the largest share, roughly a third of the paper. Second, no single question type can sink you on its own, which is exactly why partial preparation still earns marks. A student who has revised only definitions and formulas can still collect most of the MCQ and very short answer marks.

Here is what the blueprint means for your writing time. A 1-mark MCQ should take under a minute. A 3-mark short answer deserves about 4 to 5 minutes, because it needs a definition, a reason and sometimes an example. A 4-mark numerical needs 6 to 7 minutes if you write the formula, substitute values, and state the unit. Multiply those by the number of questions and you can see where the 3 hours go.

A typical 3-mark question looks like this: "Explain the term osmosis and state one application." Marks are usually split as 1 for the definition, 1 for the application, and 1 for correct scientific language. Students who write only the definition lose two marks even though they knew the topic. The fix is to count the marks in the question and write one distinct point for each.

Use the blueprint as a time budget, not just a revision list. If you know the numerical section carries around 10 to 15 marks, you will not leave it for the final ten minutes. When you solve a full-length paper from this page, write the start and end time beside each section and compare it with the table above. That single habit shows you which question type is eating your time.

For chapter-level preparation, pair this blueprint with the Class 12 Chemistry syllabus page with chapter list and deleted topics, and keep the chapter-wise textbook solutions open while practising the 3 and 4 mark questions.

Chapter-wise Weightage: Where the Marks Actually Come From

Question-type blueprint tells you the shape of the paper. Chapter weightage tells you what the paper is made of. The two are different questions: one asks "how many 3-mark questions?" and the other asks "which chapters do those 3-mark questions come from?" You need both answers before you plan revision.

Weightage here means the approximate number of marks a chapter contributes to the 70-mark theory paper. The figures below are indicative, built from the board's blueprint and the pattern seen in recent papers. The board does not always publish an official chapter-wise mark split, so treat each number as a planning estimate, not a promise [verify].

High-weightage chapters

Solutions, Thermodynamics, Electrochemistry and Kinetics together carry roughly a third of the paper, and they are also the chapters where numericals live. That combination matters: these are the chapters where a student can gain or lose 20 marks in one sitting. Colligative properties, the Nernst equation, the first law and its applications, and order of reaction calculations are the specific topics that repeat.

Tip: finish these four chapters first in revision and solve every numerical in the textbook exercise before touching anything else. A worked example of the kind you will meet: "Calculate the boiling point elevation of a solution containing 18 g of glucose in 500 g of water (Kb = 0.52 K kg mol⁻¹)." The marks are for the formula, the correct molality, the substitution and the unit, not just the final number.

Medium-weightage chapters

The p-block, d-block, coordination compounds and the two main organic units (haloalkanes, and aldehydes/ketones/acids) form the middle band. These chapters rarely produce long numericals, but they produce a steady stream of 2 and 3-mark questions on properties, trends, named reactions and structures.

Tip: for this band, prepare a one-page sheet per chapter with the reactions, reagents and conditions written in a single column. In the exam you will be asked to complete or explain a reaction, and a missing reagent costs the whole mark for that step.

Low-weightage but scoring chapters

Amines, Biomolecules, Polymers, Chemistry in Everyday Life, Solid State, Surface Chemistry and Isolation of Elements each contribute only 2 to 4 marks. Do not skip them, because these marks are the easiest in the paper: they are mostly definition and fact based, with very little calculation.

Tip: keep these chapters for the last two weeks and revise them from short notes. A student who can write the classification of polymers, the structure of glucose, and three uses of coordination compounds picks up 10 to 12 marks that many others leave on the table.

If your syllabus copy is old, check the chapter list and deleted topics on the Class 12 Chemistry syllabus page before you build a revision order from this table, and keep the chapter-wise textbook solutions open when you practise the medium-weightage organic chapters.

How to Attempt a Chemistry Sample Paper in Exam Conditions

A sample paper solved with your textbook open is a reading exercise, not practice. The paper only tests you when the conditions match the exam hall: nothing to consult, a clock running, and no second chance at a question you skipped. Set that up deliberately.

Setting up a 3-hour practice session

• Clear the table of everything except the question paper, answer sheets, pen, pencil, scale and a simple calculator if your board permits one [verify].
• Keep the phone in another room, not face-down on the desk. A single glance at a notification breaks the concentration you are trying to build.
• Use a wall clock or a kitchen timer set to 3 hours. Write the start time on the top of your answer sheet, exactly as you would in the exam.
• Tell the people at home you are unavailable for three hours. Interruptions are the main reason practice attempts run past time.
• Do not pause the timer for a glass of water or a doubt. Note the doubt on a rough sheet and look it up only after the paper ends.

Suggested time split across sections

The theory paper is 70 marks in 3 hours, so you have roughly 2.5 minutes per mark. That average hides the real problem: easy 1-mark questions should take seconds, while a 4-mark numerical needs a careful 6 to 8 minutes. Use a split like this as your first target, then adjust after two or three attempts.

If you finish a stage early, move to the next one. If a stage runs over, cut time from revision, never from numericals.

What to do in the first 10 minutes

Read the whole paper before writing anything. This sounds wasteful, but it is the single habit that saves the most marks. When you read all questions first, your brain starts working on the harder ones in the background while you answer the easy ones.

As you read, mark each question in three ways: a tick for "I can do this now", a question mark for "I know this but need to think", and a cross for "I cannot do this". Start writing with the ticks. For example, if question 3 asks you to write the IUPAC name of a compound and question 12 asks you to explain the mechanism of a reaction, do question 3 first and bank the mark.

Also check the paper structure in these ten minutes: how many sections, whether there is an internal choice, and whether any question has two parts. Students regularly lose marks by answering part (a) of an internal-choice question and part (b) of the other option. Timed writing practice is what fixes this: after four or five full attempts, the reading stage becomes automatic and your speed in the middle of the paper improves noticeably. Keep the chapter-wise textbook solutions aside for later; during the attempt, nothing is open.

Self-Evaluation: Using the Answer Key to Score Your Attempt

Solving the paper is only half the work. The marks you gain come from what you do after the timer stops. Sit with the answer key the same day, while your reasoning is still fresh, and mark the paper the way an examiner would.

Marking your own paper honestly

Give marks for steps, not just the final answer. In a numerical, the formula, the substitution with units, and the calculation each carry credit, so a wrong final answer with correct working still earns partial marks. In organic chemistry, the reagent written above the arrow and the condition written below it are separate scoring points. If you wrote the product but skipped the condition, deduct accordingly. Be strict with yourself here: a lenient self-check gives you a false sense of readiness.

One practical check: after marking, add up your score twice. Students often over-credit answers they "meant" to write. The examiner only sees what is on the page.

Creating an error log

An error log is a single notebook page where every lost mark is recorded with its cause. Four columns are enough: question number, topic, mistake type, and the correction in one line.

• Concept: you did not know the rule, for example confusing order of a reaction with molecularity.
• Calculation: the method was right but the arithmetic, log, or antilog went wrong.
• Presentation: missing unit, unlabelled diagram, unbalanced equation, or an answer written outside the margin.

Then tag each entry with one of three labels: "did not know", "knew but forgot", or "silly mistake". The fix differs for each. "Did not know" means reopen that chapter and its textbook solutions. "Knew but forgot" means the idea needs active recall, not re-reading, so write it from memory twice. "Silly mistake" means a habit change: underline the unit in the question, or circle the word "not" before answering.

Deciding what to revise next

Count the entries by topic. The two or three topics with the most rows become your revision list for the week, ahead of anything you merely feel weak in. Before you attempt the next sample paper, read the error log from start to end; it takes ten minutes and stops the same mistakes from repeating. If the same topic keeps appearing across two papers, treat it as a gap in understanding and go back to the syllabus page to check whether that portion needs a full re-read.

Board Model Papers vs Textbook Exercises: What to Solve and When

These two resources do different jobs, and students who confuse them lose marks. A textbook exercise tests whether you understood one chapter: it asks you to name a compound, balance one equation, or solve one numerical from that chapter's formula. A model paper tests whether you can hold the whole syllabus together for three hours: it jumps from electrochemistry to coordination compounds to organic conversions in the same paper, and it rewards you for choosing the right method quickly.

Think of it this way. A textbook question on the Arrhenius equation asks you to calculate the rate constant at a new temperature. A model paper might give you the same calculation as a 3-mark sub-question, tucked after an MCQ on order of reaction and before a name reaction. Same chemistry, different demand: recall speed, not just understanding.

The sequence that works is fixed: finish the textbook exercises chapter by chapter first, then move to full-length sample papers. If you start full papers in November while two chapters are still unread, you will meet questions you cannot attempt and the score will tell you nothing useful. Use the Class 12 Chemistry syllabus page to confirm which chapters are in the current course, then work through the chapter-wise textbook solutions so each exercise is checked, not just attempted.

Do not treat textbook questions as optional. Board papers regularly reuse them with small changes: a different compound in the same reaction, or one value changed in a numerical. A student who has solved every exercise recognises the question in ten seconds and saves time for the long answers.

The opposite mistake is equally costly. Solving ten sample papers without reopening the textbook gives you speed on question types but leaves gaps in theory and solved examples, especially in physical chemistry where the textbook's worked examples show the exact step order the examiner expects. Sample papers diagnose; the textbook teaches. You need both, in that order.

Common Mistakes in Chemistry Numericals and Name Reactions

Chemistry marks leak in two places: numericals, where students lose marks on presentation and units rather than on the concept, and organic reactions, where the chemistry is right but the equation is incomplete. Both are fixable within a few practice papers if you know exactly what to check.

Numerical errors that cost marks

Take a typical 3-mark numerical: "Calculate the emf of the cell at 298 K given E°cell = 1.10 V and the concentration of the electrolyte solutions." Most students know the Nernst equation. The marks are lost in the writing.

• Formula not written before substitution. Examiners award a mark for the correct formula. Write E = E° − (0.059/n) log [products]/[reactants] first, then substitute. Fix: make the formula the first line of every numerical answer, always.
• Missing units. An answer of "1.08" without "V" or "mol L⁻¹" can lose a mark even when the number is right. Fix: circle the unit in the question before you start, so you know what to attach at the end.
• Wrong significant figures. Log and antilog values are usually taken to two or three decimal places [verify], and rounding too early changes the final answer. Fix: keep the full calculator value till the last line, round only at the end.
• Log and antilog slips. Using log instead of −log, or forgetting that log(10) = 1, is common in pH and Nernst problems. Fix: write the intermediate log value on paper before taking antilog, so the slip is visible.
• Calculation errors under time pressure. Fix: do the arithmetic twice, once while writing and once during the last 15 minutes of revision.

One reassurance: step-by-step working earns partial marks even when the final answer is wrong. A numerical with the correct formula, correct substitution and one arithmetic error typically keeps most of its marks; a numerical with only a final answer and no working can score zero if that answer is wrong. Write every step.

Organic reaction writing mistakes

Name reactions and conversions are marked on the equation as a whole: reactants, reagents written above and below the arrow, conditions, and products. A single missing reagent turns a correct reaction into an incomplete one.

• Reagents or conditions missing. Writing "CH₃CH₂OH → CH₃CHO" without "alk. KMnO₄, heat" loses the mark. Fix: for every named reaction, memorise the reagent line as a phrase, not as a separate fact.
• Wrong arrows. Using a plain arrow where a reversible arrow or a specific reagent arrow is expected. Fix: redraw the arrow with its reagent labels before you move to the next question.
• Unbalanced equations. Especially in combustion and substitution reactions. Fix: count atoms on both sides in one quick pass.
• By-products forgotten. Reactions such as esterification or dehydrohalogenation produce water or HX alongside the main product. Fix: ask "what else is formed?" after writing the main product.
• Incorrect IUPAC names. Numbering from the wrong end, or ignoring the principal functional group while choosing the suffix. Fix: identify the principal group first, then number to give it the lowest locant.

Use the chapter-wise textbook solutions to check your reaction writing against the textbook's exact format, and keep a single page listing every named reaction with its reagent line. Before your next sample paper, read that page once. It takes ten minutes and protects several marks.

A 6-Week Practice Plan Using These Sample Papers

Six weeks is enough time to cover the full Chemistry syllabus once and still sit four full-length papers, provided you keep the order fixed: chapters first, full papers later. Do not open Set 1 in week one. A full paper attempted before revision only tells you what you already know you do not know.

Weeks 1 to 3: chapter revision and textbook exercises

Spend these three weeks on the high-weightage chapters listed in the weightage table above. For each chapter: read the textbook once, write the formulas and named reactions on a single sheet, then solve every textbook exercise question. Cross-check your answers against the chapter-wise textbook solutions so you catch format errors early, especially in reaction equations.

A realistic daily load is 1 to 1.5 hours on weekdays and 3 hours on weekends. In three weeks that is roughly 40 to 45 hours, enough for about 8 to 10 chapters done properly. Keep the syllabus page open to confirm which topics are still in the course.

Weeks 4 to 6: full-length timed papers and error review

• Week 4: Set 1 on a weekend morning, then a weekday to mark it and fill the error log.
• Week 5: Set 2 mid-week, plus one day re-solving every wrong question from Set 1 without looking at the solution.
• Week 6: One additional practice set, one previous year paper, and a final pass through the error log.

Keep one fixed day each week, ideally Sunday, only for error review: re-solve incorrect questions from memory, then check. If a topic fails twice, go back to the textbook chapter rather than attempting a third paper on it.

Quick Revision Checklist Before the Exam

Use this list only in the last two days before the paper. It is a recall test, not a revision lesson. If an item does not come back from memory, open that chapter for ten minutes and come back to the list.

Tick an item only when you can write it on blank paper, without the textbook open. Reading a formula and recognising it is not the same as producing it under exam pressure.

• All numerical formulas from Solutions, Electrochemistry, Chemical Kinetics and Thermodynamics, with units for each symbol.
• Named reactions with exact reagents and conditions written above and below the arrow, for example Cannizzaro, Aldol, Hoffmann bromamide degradation and Kolbe electrolysis.
• Definitions the board expects in fixed wording: molarity, molality, order of reaction, molecularity, emf, and chirality.
• Structures and hybridisation of common molecules, plus the labelled diagrams you must draw, such as the standard hydrogen electrode and a galvanic cell.
• Numerical problem types: log and antilog calculations, half-life, rate constant, packing efficiency, and molar mass from colligative properties.
• IUPAC naming rules for alcohols, aldehydes, ketones, acids and amines.
• Distinctions the paper asks for directly, such as order vs molecularity and SN1 vs SN2.
• Transition and inner transition element trends: oxidation states, colour, magnetic moment and lanthanoid contraction.
• Your own error log entries from the practice sets, re-checked once.

Keep the syllabus page open while you tick items so you do not spend these two days on a deleted topic.

Frequently Asked Questions

Where can I download the MSBSHSE Class 12 Chemistry sample paper for free?

Right on this page. The download table above lists Set 1, Set 2 and the additional practice sets as PDFs, and every set includes solutions. Click the set you want and save the file to your phone or laptop. No login or payment is needed. Start with Set 1, since it covers the full syllabus in one paper.

Do these sample papers follow the latest Maharashtra Board Chemistry syllabus?

Yes, the sets are built on the current HSC Chemistry syllabus and paper pattern [verify]. If the board revises the pattern, the blueprint numbers on this page may lag behind, so cross-check the official format from your textbook or the latest board circular before your final revision round. The chapter list and mark distribution are the parts most likely to change.

How many Chemistry sample papers should I solve before the HSC exam?

Three to four full-length papers under timed conditions is a practical target: Set 1 early, Set 2 a few weeks later, and the additional sets in the final month. What matters more than the count is what you do after each attempt. Mark every lost mark against the blueprint, revise those chapters, then attempt the next paper.

Is the Class 12 Chemistry paper pattern the same as last year?

The sets here follow the pattern as it stands now [verify]. Board patterns do change occasionally, so confirm the current section-wise marks and question types from your textbook or the board circular. The blueprint table on this page shows how the 70 theory marks are split, which helps you see whether anything has shifted from last year.

Which chapters carry the most marks in the Maharashtra Board Class 12 Chemistry paper?

Weightage is not identical across chapters, and the chapter-wise table on this page gives the exact split. Use it to rank your revision: chapters with higher marks deserve more solved numericals and reaction practice, while lighter chapters can be revised through quick notes. Confirm the weightage against the current blueprint [verify] before you finalise your study order.

Are solutions provided with the Chemistry sample papers on this page?

Yes. Every set, including the additional practice sets, comes with step-wise solutions or answer keys. Use them only after you finish the paper under exam conditions, then compare your method, not just the final answer. For numericals, check whether your working earns step marks, since that is where most students lose easy marks.