Halogen
Halogens – comparative study, occurrence, physical states and chemical reactivities of the free elements, peculiarities of fluorine and iodine; Hydracids of halogens (preparation, properties, reactions and uses), interhalogen compounds (examples); Oxyacids of chlorine.
Elasticity : Hooke’s law, elastic modulii, Poisson’s ratio, elastic energy.
Gravitation :
Laws of gravitation, gravitational field and potential, acceleration due to gravity and its variation, escape velocity, Kepler’s laws and planetary motion, motion of satellites, Geostationary orbit.
