NEST Chemistry Sample Paper 2026 walks you through the full Chemistry section in NISER's 2026 format: 20 single-correct MCQs worth 60 marks in about 45 minutes, with a balanced mix of Physical, Inorganic, and Organic chemistry from NCERT Class XI and XII.

• Chemistry is the section most NEST students count on for their top 3. Physical chemistry numericals, inorganic reaction recall, and organic mechanisms all show up, but the balance shifts year to year. A few NEST Chemistry sample papers help you see which third of the syllabus you score on most.
• Each correct answer earns +3 marks and each wrong one cuts 1 mark. NEST Chemistry stays strictly inside NCERT, so questions on advanced organic reactions or specialised coordination chemistry beyond NCERT will not appear. JEE Main coaching material that goes past NCERT can mislead you here.
• 45 minutes for 20 Chemistry questions feels comfortable, but Equilibrium and Electrochemistry numericals can eat 3 to 4 minutes each. NEST Chemistry sample papers train you to spot those before you start solving.

NEST Chemistry Sample Papers: Download PDF

How to Solve NEST Chemistry Sample Papers

NEST Chemistry rewards quick recall of NCERT reactions and clean numerical work in Physical Chemistry. The method below is built around those two strengths.

• Set real exam conditions: Set a 45 minute timer for the Chemistry section, use only the on-screen calculator NEST allows, and keep notes out. Match the CBT layout you will see at the centre.
• Quick scan first: Spot the direct-fact questions in Periodic Table trends, Coordination Compound nomenclature, and IUPAC naming. These usually take under a minute each. Save the longer Equilibrium, Electrochemistry, and Chemical Kinetics numericals for the middle of the section.
• Start with Inorganic and Organic theory: These are usually quicker to score on than Physical Chemistry numericals. Finish the easy fact-based questions first, then move to the longer numericals.
• Watch the negative marking on names: Each wrong answer cuts 1 mark. Coordination Compound names, IUPAC names of organic compounds, and named reactions are common trap zones where one wrong prefix can mark you wrong.
• Skip out-of-NCERT traps: If a sample paper asks about reactions or compounds that are not in your Class XI or XII NCERT books, the paper is either too old or made for a different exam like JEE Advanced. Skip those questions and check where the paper came from before doing more of it.
• Review the paper properly:
  • Note the time you spent on Physical, Inorganic, and Organic chemistry separately.
  • Tag each wrong answer by reason: wrong reagent, misread structure, calculation slip, or out-of-syllabus topic.
  • Keep a notebook of named reactions, exceptions in Periodic Table trends, and common organic mechanisms.
  • Reattempt every wrong and skipped question the next day, untimed, so the right method sticks.

NEST Chemistry Sample Paper: Importance

Chemistry has 20 questions worth 60 marks, and it is usually the section where students from a medical-prep background score the highest. Sample papers help you check whether Chemistry is in your top 3 or sitting just below the cut.

• Reading the 60-mark structure: Chemistry carries 60 marks, just like every NEST subject. You can score quickly here if you stay inside NCERT, because most questions are fact-recall or direct application.
• Splitting your 45 minutes: A typical NEST Chemistry paper has about 6 to 8 Physical Chemistry questions, 5 to 6 Inorganic, and 7 to 8 Organic. Plan your time around this split rather than dividing 45 minutes equally across 20 questions.
• Skip rule for Chemistry: Each wrong answer cuts 1 mark. Coordination Compounds and Organic IUPAC names trip up most students, so skip a question if you are unsure of the exact prefix or product.
• Spotting your strong third: Most students prefer one of the three branches (Physical, Inorganic, Organic). Sample papers show you which branch gives you the most marks for the time you put in.
• Staying inside NCERT scope: NEST Chemistry follows NCERT strictly. Specialised pericyclic reactions, advanced coordination crystal field splitting, or rare named reactions are not in scope. Sample papers built on the 2026 syllabus stop you from wasting time on these.
• Tracking improvement subject by subject: Your NEST rank depends on the SMAS cut-off in each of your top 3 subjects. After 4 to 5 papers, you can see if your Chemistry score is moving up, flat, or falling.

Why Choose Collegedunia's NEST Chemistry Sample Paper

Most NEST Chemistry sample papers online still mix in JEE-style organic reactions and advanced inorganic chemistry that NISER never tests. Collegedunia's 2026 papers stay strictly inside the syllabus published by NISER and follow the +3/-1 marking exactly.

• Latest and Accurate: Every question follows the NEST 2026 Chemistry pattern published by NISER, with 20 single-correct MCQs and 60 marks for the section.
• Within NCERT scope: Questions stay inside Class XI and XII NCERT only. Advanced reactions, beyond-NCERT named reactions, and specialised coordination chemistry are left out.
• Detailed solutions: Each Chemistry solution walks through the concept, the reaction or formula used, and the trap most students fall into. Useful for Coordination Compounds, Electrochemistry, and Aldehydes/Ketones where small slips cost marks.
• Balanced Physical, Inorganic, Organic mix: Questions are spread across the three branches in the same proportion past NEST papers have shown, with no over-loading on one section.
• User-friendly: Hyperlinked questions and solutions let you jump from any question to its explanation and back, which saves time during review.
• Free to download: Every NEST Chemistry sample paper PDF is free. No login, no email, no payment.

NEST Chemistry Sample Paper: Understanding the Exam Pattern

NISER conducts NEST 2026 on June 06, 2026 in CBT mode. Chemistry is one of 4 subjects in the paper, each worth 60 marks. Whether Chemistry counts toward your final score depends on whether it lands in your top 3. The full pattern is given below, with the Chemistry row highlighted.

NEST Marking Scheme: +3 for every correct answer, -1 for every wrong answer, 0 for unattempted questions. Only the marks from your best 3 subjects are added to your final score.

Duration: 180 minutes total (about 45 minutes for Chemistry) | Mode: CBT (online) | Language: English and Hindi

NEST Chemistry Sample Paper : Topic-wise Weightage

NEST Chemistry is split roughly equally between Physical, Inorganic, and Organic chemistry across Class XI and XII. The table below shows how a typical 20-question paper is spread across the main chapter groups.

Based on the previous year's trend analysis. NISER does not officially release chapter-wise weightage. NEST Chemistry stays strictly within the NCERT Class XI and XII scope.

Mistakes to Avoid While Solving Sample Papers

NEST Chemistry mistakes usually come from two places: using JEE prep material that covers reactions and concepts beyond NCERT, and rushing Physical Chemistry numericals to save time for Organic. Watch out for these.

• Do not use JEE Advanced Chemistry sample papers as NEST prep. Those papers cover pericyclic reactions, advanced coordination chemistry, and named reactions that are not in NEST scope.
• Do not assume Chemistry will be your strongest subject. After 3 or 4 NEST Chemistry sample papers, check your score. If you keep landing below 30, plan how the section fits in your top 3.
• Do not skim Coordination Compounds. The chapter is small but consistently gives 1 to 2 questions every year. Two well-revised days here can earn 6 marks.
• Do not guess on long Equilibrium or Electrochemistry numericals. A wrong answer cuts 1 mark, and the 3 to 4 minutes spent solving in the wrong direction is time you cannot recover.
• Do not study reactions outside the 2026 NCERT syllabus. NISER does not test reactions or compounds that are not in NCERT Class XI or XII. Cross-check your prep material against the brochure.
• Do not ignore Some Basic Concepts of Chemistry. Mole concept, empirical and molecular formulas, and percentage composition look basic but show up in almost every NEST Chemistry paper.

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