Databus Logo
Blog Login →
Used by 500+ schools across India 🇮🇳

CBSE Class 11 Science Question Paper Generator

Chapter-wise unit tests, half-yearly papers, and full-syllabus mocks for Physics (042), Chemistry (043), and Biology (044) — in under 2 minutes. Step-wise marking scheme and HD diagrams included.

Class 11 is where students first encounter calculus-based Physics, organic reaction mechanisms in Chemistry, and cell biology depth in Biology. The generator covers all of it — with questions calibrated to the 2025-26 CBSE blueprint and 50% competency mandate.

Chapter-wise tests, half-yearlies, and full mocks 50% competency questions per 2025-26 CBSE mandate Step-wise marking scheme per CBSE protocol Set A, B, C generated simultaneously

What makes Class 11 Science papers harder to set than Class 10

Class 11 introduces abstractions that Class 10 didn't require. Good questions test conceptual understanding, not just recall — and that takes longer to write manually.

Physics — calculus enters

Kinematics, work-energy, and simple harmonic motion all require calculus-based derivations. Writing numericals with realistic values that produce clean answers without a solver is difficult and error-prone.

🧪

Chemistry — organic mechanisms begin

Hydrocarbons and basic organic chemistry introduce reaction mechanisms and IUPAC nomenclature for the first time. Questions need structural formulas that format correctly — a challenge in Word or Excel.

🧬

Biology — depth over breadth

Class 11 Biology covers five units from taxonomy to human physiology. Case-based questions need scientific passages and sub-questions that test different cognitive levels — which takes significant time to construct from scratch.

2025-26 Blueprint — Chapter by Chapter

Every generated paper follows the exact unit weightage and question type distribution from the latest CBSE circular. Select a subject to see the full breakdown.

Physics (042) — Unit Weightage

70 Marks Theory + 30 Marks Practical

Unit I: Physical World & Measurement + Kinematics

Ch 1: Physical World, Ch 2: Units & Measurements, Ch 3: Motion in a Straight Line, Ch 4: Motion in a Plane

10
2 MCQ 1 Short Answer 1 Numerical (3 marks)

Unit II: Laws of Motion + Work, Power & Energy

Ch 5: Laws of Motion, Ch 6: Work, Energy & Power

10
2 MCQ 1 Numerical (3 marks) 1 Short Answer

Unit III: System of Particles + Gravitation

Ch 7: System of Particles & Rotational Motion, Ch 8: Gravitation

11
2 MCQ 1 Case-Based 1 Short Answer

Unit IV: Properties of Bulk Matter

Ch 9: Mechanical Properties of Solids, Ch 10: Mechanical Properties of Fluids, Ch 11: Thermal Properties of Matter

15
3 MCQ 1 Case-Based 1 Long Answer

Unit V: Thermodynamics + KTG

Ch 12: Thermodynamics, Ch 13: Kinetic Theory of Gases

09
2 MCQ 1 Numerical (3 marks)

Unit VI: Oscillations & Waves

Ch 14: Oscillations, Ch 15: Waves

15
3 MCQ 1 Source-Based 1 Long Answer

Question Type Distribution (70 Marks)

Section A — MCQ & Assertion-Reasoning (1 mark each) 16 × 1 = 16
Section B — Very Short Answer (2 marks each) 5 × 2 = 10
Section C — Short Answer (3 marks each) 7 × 3 = 21
Section D — Case-Based (4 marks each) 2 × 4 = 08
Section E — Long Answer (5 marks each) 3 × 5 = 15
Total 70 Marks

Class 11 vs Class 10 — key differences in paper structure

  • Class 11 introduces calculus-based derivations — not required in Class 10
  • Case-based questions in Class 11 use real physics scenarios (fluid mechanics, SHM applications)
  • Section E long answers include internal choice from different chapters
  • 50% of marks are competency-based — higher than the Class 10 proportion

Chemistry (043) — Unit Weightage

70 Marks Theory + 30 Marks Practical

Some Basic Concepts + Structure of Atom

Ch 1: Basic Concepts of Chemistry, Ch 2: Structure of Atom

13
2 MCQ 1 Mole concept numerical 1 Short Answer

Classification + Chemical Bonding

Ch 3: Periodic Table, Ch 4: Chemical Bonding & Molecular Structure

13
2 MCQ VSEPR geometry questions 1 Case-Based

Chemical Thermodynamics

Ch 6: Thermodynamics — enthalpy, entropy, Gibbs energy

09
2 MCQ Hess's law numerical

Equilibrium

Ch 7: Equilibrium — ionic, Kp, Kc, pH calculations

07
1 MCQ Kp/Kc numerical pH calculation

Redox + Organic Chemistry Basics

Ch 8: Redox, Ch 12: Organic Chemistry — General Principles

20
3 MCQ Oxidation number questions IUPAC nomenclature 1 Long Answer

Hydrocarbons

Ch 13: Hydrocarbons — alkanes, alkenes, alkynes, benzene

08
2 MCQ Reaction questions Isomerism

What SchoolDeck generates for Class 11 Chemistry

  • Mole concept numericals with verified stoichiometric answers (empirical formula, limiting reagent)
  • VSEPR theory questions with molecular geometry diagrams (water, ammonia, PCl₅, SF₆)
  • Thermodynamics numericals — Hess's law, ΔG calculations, spontaneity determination
  • Kp/Kc and pH equilibrium numericals with realistic initial concentration values
  • IUPAC nomenclature for alkanes, alkenes, alkynes, and benzene derivatives with structural formulas
  • Markovnikov rule, anti-Markovnikov, and free radical mechanism questions for hydrocarbons

Biology (044) — Unit Weightage

70 Marks Theory + 30 Marks Practical

Unit I: Diversity of Living Organisms

Ch 1: The Living World, Ch 2: Biological Classification, Ch 3: Plant Kingdom, Ch 4: Animal Kingdom

15
3 MCQ Classification questions 1 Case-Based

Unit II: Structural Organisation

Ch 5: Morphology of Flowering Plants, Ch 6: Anatomy of Plants, Ch 7: Structural Organisation in Animals

10
2 MCQ Diagram labelling

Unit III: Cell Structure & Functions

Ch 8: Cell the Unit of Life, Ch 9: Biomolecules, Ch 10: Cell Cycle & Division

15
3 MCQ Cell organelle diagrams Mitosis stages

Unit IV: Plant Physiology

Ch 11: Transport in Plants, Ch 12: Mineral Nutrition, Ch 13: Photosynthesis, Ch 14: Respiration, Ch 15: Growth & Development

12
2 MCQ Photosynthesis diagrams 1 Source-Based

Unit V: Human Physiology

Ch 16: Digestion, Ch 17: Breathing, Ch 18: Body Fluids, Ch 19: Excretion, Ch 20: Locomotion, Ch 21: Neural Control, Ch 22: Chemical Coordination

18
4 MCQ System diagrams 1 Long Answer

Biology-specific generation features — Class 11

  • Classification questions: Kingdom to species level for both Plant and Animal kingdoms, with distinguishing features for each phylum
  • Cell organelle diagrams: Mitochondria, chloroplast, nucleus, ER — labelled line diagrams with blank label arrows in the standard CBSE format
  • Mitosis and Meiosis stages: Diagram-based questions for each phase with characteristic features to identify
  • Human physiology system diagrams: Digestive system, respiratory system, nephron structure, neuron structure — all vector-based line diagrams
  • Photosynthesis case-based: Passage on C3 vs C4 plants or light vs dark reactions with 4 application-level sub-questions

Sample Generated Questions — with Marking Scheme

Representative examples of what SchoolDeck generates for Class 11 Science. Each includes the board-standard answer key and step-wise marking scheme.

Physics — Case-Based Question (4 marks) | Section D Unit IV: Properties of Bulk Matter — Fluid Mechanics

Passage: Bernoulli's principle states that in a streamline flow, the sum of pressure energy, kinetic energy, and potential energy per unit volume remains constant. A Venturimeter is a device that uses this principle to measure the flow rate of a fluid through a pipe. It consists of a wider tube connected to a narrow constriction. When fluid flows through the constriction, its velocity increases and pressure decreases.

Answer the following based on the passage:

(i) State Bernoulli's equation and identify the three forms of energy it accounts for. (1 mark)

(ii) Why does the pressure decrease at the constriction of the Venturimeter? (1 mark)

(iii) (a) Water flows through a horizontal pipe of cross-section area 10 cm² at 2 m/s. At a constriction, the area reduces to 4 cm². Find the velocity at the constriction and the pressure difference between the two sections. (Density of water = 1000 kg/m³) (2 marks)

OR

(iii) (b) Give two practical applications of Bernoulli's principle other than the Venturimeter. Explain how one of them works. (2 marks)

Marking Scheme

(i) P + ½ρv² + ρgh = constant. Three forms: pressure energy (P), kinetic energy (½ρv²), potential energy (ρgh). — 1 mark

(ii) By continuity equation, velocity increases at constriction. By Bernoulli's principle, increase in KE → decrease in pressure energy. — 1 mark

(iii)(a) Using A₁v₁ = A₂v₂: v₂ = (10 × 2)/4 = 5 m/s — ½ mark. ΔP = ½ρ(v₂² – v₁²) = ½ × 1000 × (25 – 4) = 10,500 Pa — 1½ marks. — 2 marks total

Chemistry — Short Answer Numerical (3 marks) | Section C Unit V: Equilibrium — Kp and Kc

For the reaction: N₂(g) + 3H₂(g) ⇌ 2NH₃(g), the equilibrium concentrations at 500 K are: [N₂] = 0.5 mol/L, [H₂] = 0.3 mol/L, [NH₃] = 0.2 mol/L. Calculate Kc and Kp for this reaction. (R = 0.0821 L atm mol⁻¹ K⁻¹)

Step-wise Marking Scheme (CBSE Protocol)

Step 1 (1 mark): Kc = [NH₃]² / ([N₂][H₂]³) = (0.2)² / (0.5 × (0.3)³) = 0.04 / 0.0135 = 2.96 L² mol⁻²

Step 2 (1 mark): Δn = moles of gaseous products – moles of gaseous reactants = 2 – (1+3) = –2

Step 3 (1 mark): Kp = Kc × (RT)^Δn = 2.96 × (0.0821 × 500)^(–2) = 2.96 / (41.05)² = 1.75 × 10⁻³ atm⁻²

Note: Award full marks if correct method used even if arithmetic error in the final step.

Biology — Source-Based Question (4 marks) | Section D Unit IV: Plant Physiology — Photosynthesis

Source: Sugarcane, maize, and sorghum are C4 plants. They have a special leaf anatomy called Kranz anatomy, where bundle sheath cells (containing stacked grana-less chloroplasts) surround the vascular bundle, and mesophyll cells (with normal chloroplasts) lie outside them. C4 plants fix CO₂ first into a 4-carbon compound (oxaloacetate) in mesophyll cells using the enzyme PEP carboxylase, which has a higher affinity for CO₂ than RuBisCO.

(i) Why is PEP carboxylase more efficient than RuBisCO in CO₂ fixation? (1 mark)

(ii) Where does the Calvin cycle (C3 pathway) take place in a C4 plant? (1 mark)

(iii) Name the 4-carbon compound formed during the first CO₂ fixation in C4 plants and state its fate. (1 mark)

(iv) Give one advantage that Kranz anatomy provides to C4 plants in hot, dry environments. (1 mark)

Marking Scheme

(i) PEP carboxylase has a much higher affinity for CO₂ than RuBisCO and does not bind to O₂, so there is no photorespiration. — 1 mark

(ii) Calvin cycle occurs in the bundle sheath cells. — 1 mark

(iii) Oxaloacetate (OAA) is formed. It is transported to bundle sheath cells where CO₂ is released for the Calvin cycle. — 1 mark

(iv) Bundle sheath cells are gas-tight, concentrating CO₂ around RuBisCO. This allows C4 plants to keep stomata partially closed (reducing water loss) while still maintaining efficient photosynthesis. — 1 mark

The complete generated paper includes all sections (A through E) with a full answer key and marking scheme. Print-ready PDF and editable DOCX both available.

See a Full Paper in the Demo →

More question paper generators for Class 11 & related

Related generators in the SchoolDeck question paper hub — same quality, different class or subject.

Frequently Asked Questions

Questions Class 11 Science HODs and teachers ask before using SchoolDeck.

Does the generator follow the CBSE 2025-26 blueprint for Class 11?

Yes. All three subjects follow the 2025-26 CBSE unit weightage. Physics (042): Units/Kinematics (10), Laws of Motion/WPE (10), System of Particles/Gravitation (11), Properties of Bulk Matter (15), Thermodynamics/KTG (9), Oscillations and Waves (15). Total 70 marks theory + 30 marks practical.

The section structure follows the standard CBSE pattern: Section A (16 × 1 mark MCQ and Assertion-Reasoning), Section B (5 × 2 marks Very Short Answer), Section C (7 × 3 marks Short Answer), Section D (2 × 4 marks Case/Source-Based), Section E (3 × 5 marks Long Answer with internal choice). 50% of questions are competency-based as per the 2025-26 mandate.

Can I generate chapter-wise unit tests, not just full papers?

Yes. Three paper types are supported: chapter-wise unit tests (20–30 marks, one or two chapters), half-yearly papers (70 marks, Term 1 units), and full-syllabus mocks (70 marks, all units proportionally distributed). You can also generate DPPs — 10–15 questions from a specific chapter at a chosen difficulty level, useful for revision before periodic assessments.

For chapter-wise tests, the section structure is adjusted proportionally — a 20-mark unit test won't include a long 5-mark answer, but will have MCQs, a short answer, and a numerical in proportion to the chapter's weight.

How are Class 11 Physics derivations and numericals generated?

Derivation questions (such as "derive the equation for escape velocity" or "derive the expression for time period of a simple pendulum") are generated with complete step-wise solutions. Marks are distributed across the diagram (if applicable), each step of the derivation, and the final expression — following the CBSE step-marking protocol.

Numericals are generated with verified inputs that produce realistic, non-trivial answers. A projectile motion numerical won't produce a negative height or a velocity exceeding physically reasonable limits. All equations and expressions are LaTeX-rendered so fractions, square roots, vector notation, and integral signs format correctly in the PDF output.

What Chemistry content is covered for Class 11?

All Class 11 Chemistry chapters are covered: mole concept and stoichiometry (Ch 1), atomic structure including quantum numbers and orbital shapes (Ch 2), periodic table trends (Ch 3), chemical bonding with VSEPR geometry and hybridisation (Ch 4), thermodynamics including ΔH, ΔG, and Hess's law calculations (Ch 6), equilibrium with Kp/Kc and pH calculations (Ch 7), redox reactions and balancing (Ch 8), general organic chemistry and IUPAC nomenclature (Ch 12), and hydrocarbons including reactions and isomerism (Ch 13).

All numericals have verified answers. IUPAC names are correct. Structural formulas are rendered with proper bond notation in the PDF. If CBSE updates or removes chapters from the syllabus, the generator excludes them automatically within 48 hours of the official circular.

Can we generate multiple sets for exam integrity?

Yes. Set A, B, and C are generated simultaneously. Questions are shuffled in order across sets, and MCQ answer options are rearranged within each question so the correct answer appears in a different position. All three sets maintain the same unit weightage, question type distribution, and difficulty ratio.

Each set has its own answer key generated automatically. The marking scheme is set-specific — if Q.5 in Set A and Q.12 in Set B cover the same topic, both answer keys reflect the correct position. Papers are downloaded as separate PDFs or as a combined print file.

Does it support the Class 11 practical and internal assessment component?

Yes. The 30-mark practical component is supported for all three subjects. For Physics, this includes a Viva-Voce question bank for each standard CBSE experiment (Young's modulus, surface tension, viscosity, simple pendulum, velocity of sound), observation record templates, and investigatory project assessment rubrics.

For Chemistry, practical-based questions cover common qualitative analysis salt tests and titration calculations. For Biology, observation sheet templates for standard experiments (stomata identification, mitosis in onion root tip, identification of specimens) are included with expected observations and conclusions pre-filled for the teacher's reference.

Used by science departments across India

500+
Schools on SchoolDeck
2L+
Students covered
<2 min
Average paper generation time
3 sets
Generated simultaneously

Used by CBSE-affiliated schools across Tamil Nadu, Karnataka, Maharashtra, Delhi, Telangana, and other states for internal assessments, half-yearly exams, and pre-board mock tests.

See a Class 11 Science paper generated in the demo

We'll generate a full Physics, Chemistry, or Biology paper live — using your school's chapter coverage and periodic test structure — so you see exactly what the output looks like before you commit.

No commitment required. Setup takes 7 days.