Gravitation
15 Topics Mechanical Properties of Solids
7 Topics Mechanical Properties of Fluids
22 Topics Thermal Properties of Matter
15 Topics Thermodynamics
12 Topics Kinetic Theory
7 Topics Oscillations
12 Topics Waves
19 Topics Biology
The Living World
10 Topics Biological Classification
10 Topics Plant Kingdom
10 Topics Animal Kingdom
10 Topics Morphology of Flowering Plants
10 Topics Anatomy of Flowering Plants
10 Topics Structural Organisation in Animals
10 Topics Cell-The Unit of Life
10 Topics Biomolecules
10 Topics Cell Cycle and Cell Division
10 Topics Transport in Plants
10 Topics Mineral Nutrition
10 Topics 
Propagation of longitudinal waves
[ Introduction, waves, wave motion, wave function, Propagation of longitudinal waves ]