NCERT ExemplarClass 9 Mathematics(NCERT Exemplar) Ch 1: Number Systems Ch 2: Polynomials Ch 3: Coordinate Geometry Ch 4: Linear Equations in Two Variables Ch 5: Introduction to Euclid’s Geometry Ch 6: Lines and Angles Ch 7: Triangles Ch 8: Quadrilaterals Ch 9: Circles Ch 10: Heron’s Formula Ch 11: Surface Areas and Volumes Ch 12: Statistics Science(NCERT Exemplar) Ch 1: Matter in Our Surroundings Ch 2: Is Matter Around Us Pure Ch 3: Atoms & Molecules Ch 4: Structure of the Atom Ch 5: The Fundamental Unit of Life Ch 6: Tissues Ch 7: Motion Ch 8: Force and Laws of Motion Ch 9: Gravitation Ch 10: Work and Energy Ch 11: Sound Ch 12: Improvement in Food Resources