Mathematics Standard (041) Key Recurring Topics
Real Numbers (HCF/LCM remainders, √5 irrationality), Polynomials (zeroes relation), Linear Equations consistency, Quadratic Equations (parameter roots), Arithmetic Progressions (middle term & sum), Triangles (similarity proofs), Circles (tangent theorems), Trigonometry (Heights & Distances 30°/45°), Surface Areas (composite solids), Statistics (grouped mean/median/mode), Probability (perfect squares/cubes).
Science (086) Key Recurring Topics
Life Processes (stomata, double circulation, nephron filtration), Control & Coordination (hormones table, reflex arc), Reproduction (emasculation, contraception), Heredity (chromosome numbers), Chemical Reactions (balancing, redox), Acids & Bases (dilution, pH), Carbon Compounds (homologous series, micelles), Light (mirror/lens formulas), Human Eye (defects & corrections), Electricity (series/parallel circuits), Magnetic Effects (solenoid door-lock).
Social Science (087) Key Recurring Topics
History (Censorship 1815, Non-Cooperation, Silk Routes), Geography (soil conservation, dams, minerals map), Political Science (power sharing Belgium vs Sri Lanka, federalism), Economics (disguised unemployment, terms of credit, SHGs, globalisation), Maps (5 guaranteed marks: National movement centres, dams, power plants, seaports).