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Science Stream Syllabus 2026-27

West Bengal Board Class 11 Science Syllabus 2026-27

Complete WBCHSE Class 11 Physics, Chemistry, Biology & Mathematics Curriculum

6 Core Subjects • PCM & PCB Options • Updated for 2026-27
Detailed syllabus for Physics, Chemistry, Biology, Mathematics, English, and Bengali as per WBCHSE guidelines.

6 Subjects PCM & PCB Options 100 Marks Each Updated Syllabus

Physics Syllabus 2026-27

West Bengal Board Class 11 Physics syllabus covers fundamental concepts of mechanics, thermodynamics, waves, and optics. Students develop strong analytical and problem-solving skills essential for engineering and competitive exams.

Unit Topics Marks
Physical World & Measurement
  • Physics: Scope and excitement, physics in relation to other sciences
  • Fundamental and derived units, SI system of units
  • Dimensions and dimensional analysis
  • Significant figures and error analysis
  • Accuracy, precision, and errors in measurement
  • Vernier callipers, screw gauge, and other instruments
  • Application of dimensional analysis for checking equations
  • Conversion of units using dimensional analysis
5
Kinematics
  • Motion in a straight line - position, path length, displacement
  • Average velocity and average speed
  • Instantaneous velocity and speed
  • Uniformly accelerated motion - equations of motion
  • Motion in a plane - position and displacement vectors
  • Velocity and acceleration in two dimensions
  • Projectile motion and its applications
  • Relative velocity and its applications
  • Motion in circular path - angular displacement, velocity, acceleration
  • Centripetal force and its applications
12
Laws of Motion
  • Newton's first law of motion - inertia and mass
  • Newton's second law of motion - force and acceleration
  • Newton's third law of motion - action and reaction
  • Impulse and impulsive force
  • Conservation of linear momentum
  • Friction - static, kinetic, and rolling friction
  • Angle of friction and angle of repose
  • Circular motion and banking of roads
  • Equilibrium of concurrent forces
  • Applications in real life situations
15
Work, Energy & Power
  • Work done by constant and variable force
  • Kinetic energy and work-energy theorem
  • Potential energy - gravitational and elastic
  • Conservative and non-conservative forces
  • Conservation of mechanical energy
  • Power - average and instantaneous power
  • Energy in collisions - elastic and inelastic
  • Collision in one and two dimensions
  • Potential energy curve and equilibrium
  • Applications in everyday life
10
System of Particles & Rotational Motion
  • Centre of mass and its motion
  • Moment of inertia - parallel and perpendicular axes theorems
  • Torque and angular momentum
  • Conservation of angular momentum
  • Rotational kinetic energy and power
  • Rolling motion - friction in rolling
  • Rigid body rotation and moment of inertia
  • Applications in real life situations
10
Gravitation
  • Kepler's laws of planetary motion
  • Universal law of gravitation - Newton's law
  • Gravitational constant - Cavendish experiment
  • Acceleration due to gravity and its variation
  • Gravitational potential and potential energy
  • Satellite motion and orbital velocity
  • Escape velocity and its significance
  • Weightlessness and its applications
8
Properties of Matter
  • Elasticity - stress, strain, and Hooke's law
  • Young's modulus, bulk modulus, shear modulus
  • Pressure in fluids - Pascal's law
  • Buoyancy and Archimedes' principle
  • Surface tension and its applications
  • Viscosity and Stoke's law
  • Applications in everyday life
8
Thermodynamics
  • Thermal equilibrium and zeroth law of thermodynamics
  • Heat, work, and internal energy
  • First law of thermodynamics and its applications
  • Thermodynamic processes - isothermal, adiabatic, isobaric, isochoric
  • Second law of thermodynamics
  • Heat engines and refrigerators
  • Entropy and its significance
8
Kinetic Theory of Gases
  • Kinetic theory of gases - assumptions and derivation
  • Gas laws and ideal gas equation
  • Pressure and temperature interpretation
  • Molecular speeds - RMS, average, most probable
  • Mean free path and its significance
  • Applications in real life situations
6
Oscillations & Waves
  • Periodic and oscillatory motion
  • Simple harmonic motion - equation and characteristics
  • SHM in spring and pendulum
  • Energy in SHM
  • Wave motion - transverse and longitudinal
  • Speed of waves in different media
  • Principle of superposition and interference
  • Standing waves and resonance
  • Applications in everyday life
8
Note: Practical work of 30 marks includes laboratory experiments, viva voce, and practical record. Students must maintain a practical notebook with all experiments.

Chemistry Syllabus 2026-27

West Bengal Board Class 11 Chemistry syllabus covers physical, organic, and inorganic chemistry. Students build a strong foundation for higher studies in chemistry and medical/engineering entrance exams.

Unit Topics Marks
Some Basic Concepts of Chemistry
  • Importance and scope of chemistry
  • Nature of matter - classification of matter
  • Laws of chemical combination
  • Dalton's atomic theory
  • Atomic and molecular masses - mole concept
  • Molar mass and percentage composition
  • Empirical and molecular formula
  • Chemical equations and stoichiometry
  • Limiting reagent and its applications
  • Problems based on mole concept
7
Structure of Atom
  • Discovery of electron, proton, and neutron
  • Atomic models - Thomson, Rutherford, Bohr
  • Bohr's theory and its limitations
  • Quantum mechanical model of atom
  • Quantum numbers and their significance
  • Orbitals and their shapes - s, p, d
  • Pauli's exclusion principle
  • Hund's rule and Aufbau principle
  • Electronic configuration of elements
  • Applications in chemical bonding
8
Classification of Elements
  • Mendeleev's periodic table - merits and demerits
  • Modern periodic law and long form periodic table
  • Groups and periods - characteristics
  • Periodicity in properties - atomic radius, ionic radius
  • Ionization enthalpy, electron gain enthalpy, electronegativity
  • Trends in periodic properties
  • Applications in chemical reactivity
7
Chemical Bonding & Molecular Structure
  • Ionic bond - formation and properties
  • Covalent bond - formation and properties
  • Coordinate bond and its characteristics
  • Lewis structures and formal charge
  • VSEPR theory and molecular shapes
  • Valence bond theory - hybridization
  • Molecular orbital theory - MOT
  • Hydrogen bonding and its importance
  • Applications in real life situations
10
States of Matter
  • Gaseous state - gas laws and ideal gas equation
  • Kinetic theory of gases - molecular interpretation
  • Real gases and deviation from ideal behaviour
  • Liquid state - vapour pressure and surface tension
  • Solid state - types and properties
  • Applications in everyday life
6
Thermodynamics
  • Thermodynamic terms - system, surroundings, state functions
  • First law of thermodynamics - applications
  • Enthalpy and Hess's law
  • Entropy and spontaneity
  • Gibbs free energy and equilibrium
  • Applications in chemical reactions
8
Equilibrium
  • Equilibrium in physical and chemical processes
  • Law of mass action and equilibrium constant
  • Factors affecting equilibrium - Le Chatelier's principle
  • Ionic equilibrium - acids, bases, and salts
  • pH scale and its significance
  • Buffer solutions and their applications
  • Solubility product and its applications
8
Redox Reactions
  • Oxidation and reduction - classical and electronic concepts
  • Oxidation number and its rules
  • Redox reactions and balancing equations
  • Electrochemical series and its applications
  • Applications in everyday life
5
Hydrogen & s-block Elements
  • Hydrogen - position, isotopes, and properties
  • s-block elements - alkali and alkaline earth metals
  • General characteristics and trends
  • Important compounds and their uses
  • Industrial applications and significance
7
Organic Chemistry - Some Basic Principles
  • Organic compounds - classification and nomenclature
  • Functional groups and their importance
  • Isomerism - structural and stereoisomerism
  • Electronic effects - inductive, resonance, hyperconjugation
  • Reaction intermediates and their stability
  • Applications in real life situations
8
Hydrocarbons
  • Alkanes - properties and reactions
  • Alkenes - properties and reactions
  • Alkynes - properties and reactions
  • Aromatic hydrocarbons - benzene and derivatives
  • Applications in daily life
8
Note: Practical work of 30 marks includes laboratory experiments, viva voce, and practical record. Students must maintain a practical notebook with all experiments.

Biology Syllabus 2026-27 (PCB Students)

West Bengal Board Class 11 Biology syllabus covers diversity of living organisms, cell biology, plant and animal physiology. Students build a strong foundation for medical and life sciences careers.

Unit Topics Marks
Diversity of Living Organisms
  • Classification of living organisms - five kingdom system
  • Kingdom Monera, Protista, Fungi, Plantae, Animalia
  • Salient features and examples of each kingdom
  • Algae, Bryophytes, Pteridophytes, Gymnosperms, Angiosperms
  • Classification of animals - invertebrata and vertebrata
  • Characteristics and examples of phyla
  • Diversity in living organisms and its significance
  • Applications in real life situations
15
Cell Biology
  • Cell theory and cell structure
  • Prokaryotic and eukaryotic cells
  • Cell organelles - nucleus, mitochondria, chloroplast
  • Endoplasmic reticulum, Golgi apparatus, lysosomes
  • Ribosomes, peroxisomes, and their functions
  • Cell membrane - structure and transport
  • Cell wall and its characteristics
  • Cell cycle and cell division - mitosis and meiosis
  • Significance of cell division in living organisms
15
Plant Physiology
  • Transport in plants - xylem and phloem
  • Mineral nutrition - essential elements and their role
  • Photosynthesis - light and dark reactions
  • Factors affecting photosynthesis
  • Respiration in plants - aerobic and anaerobic
  • Plant growth and development
  • Plant hormones - auxins, gibberellins, cytokinins
  • Applications in agriculture and horticulture
15
Animal Physiology
  • Digestive system - structure and function
  • Respiratory system - structure and function
  • Circulatory system - heart, blood, blood vessels
  • Excretory system - kidney and urinary system
  • Nervous system - neuron, brain, spinal cord
  • Endocrine system - hormones and their functions
  • Locomotion and movement - skeletal and muscular system
  • Homeostasis and its significance
15
Note: Practical work of 30 marks includes laboratory experiments, viva voce, and practical record. Students must maintain a practical notebook with all experiments.

Mathematics Syllabus 2026-27 (PCM Students)

West Bengal Board Class 11 Mathematics syllabus covers algebra, calculus, trigonometry, and coordinate geometry. Students develop strong analytical and problem-solving skills for engineering and competitive exams.

Unit Topics Marks
Sets & Functions
  • Sets and their representations
  • Types of sets - finite, infinite, empty, universal
  • Operations on sets - union, intersection, difference
  • Complement of a set and De Morgan's laws
  • Functions - domain, codomain, range
  • Types of functions - one-one, onto, into
  • Graphical representation of functions
  • Applications in real life situations
8
Relations & Functions
  • Relations - types and their representation
  • Equivalence relations and their significance
  • Functions - composition and inverse of functions
  • Binary operations and their properties
  • Applications in real life situations
8
Trigonometric Functions
  • Measurement of angles in degrees and radians
  • Trigonometric ratios - sin, cos, tan, cot, sec, cosec
  • Trigonometric identities and their proofs
  • Compound angles and multiple angle formulas
  • Sum and difference of angles
  • Graphs of trigonometric functions
  • Applications in real life situations
10
Complex Numbers
  • Complex numbers and their representations
  • Algebra of complex numbers - addition, subtraction
  • Multiplication and division of complex numbers
  • Modulus and conjugate of complex numbers
  • Argand plane and polar representation
  • De Moivre's theorem and its applications
  • Applications in real life situations
8
Linear Inequalities
  • Linear inequalities and their graphical representation
  • Solution of system of linear inequalities
  • Applications in linear programming problems
  • Applications in real life situations
5
Permutations & Combinations
  • Fundamental principle of counting
  • Permutations and their applications
  • Combinations and their applications
  • Circular permutations and arrangements
  • Applications in real life situations
8
Binomial Theorem
  • Binomial theorem for positive integral index
  • General term and middle term in binomial expansion
  • Applications in real life situations
  • Properties of binomial coefficients
6
Sequence & Series
  • Sequences and their types - arithmetic, geometric
  • Arithmetic progressions - nth term and sum
  • Geometric progressions - nth term and sum
  • Arithmetic and geometric means
  • Applications in real life situations
8
Straight Lines
  • Coordinate geometry and Cartesian system
  • Slope and equation of a straight line
  • Different forms of equation of a line
  • Distance of a point from a line
  • Angle between two lines
  • Applications in real life situations
8
Conic Sections
  • Circle - equation and properties
  • Parabola - equation and properties
  • Ellipse - equation and properties
  • Hyperbola - equation and properties
  • Applications in real life situations
8
Limits & Derivatives
  • Limits - definition and fundamental theorems
  • Algebra of limits and their applications
  • Derivatives - definition and fundamental rules
  • Derivatives of algebraic and trigonometric functions
  • Applications in real life situations
10
Statistics & Probability
  • Mean, median, mode - measures of central tendency
  • Measures of dispersion - range, variance, standard deviation
  • Probability - basic concepts and axioms
  • Addition and multiplication theorems of probability
  • Applications in real life situations
8
Note: Regular practice is essential for Mathematics. Solve problems from each unit daily and focus on understanding concepts rather than rote memorization.

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