Class 10 Science I 1 : Gravitation 2 : Periodic classification of elements 3 : Chemical reactions and equations 4 : Effects of electric current 5 : Heat 6 : Refraction of light 7 : Lenses 8 : Metallurgy 9 : Carbon compounds 10 : Space missions Class 10 Science II 1 : Heredity and Evolution 2 : Life processes in living organisms Part 1 3 : Life processes in living organisms Part 2 4 : Environmental management 5 : Towards green energy