Unit - I    Metals, Alloys, cement and refractory materials     4.1    Metallurgy : Mineral, ore, gangue, flux, slag 4.2    Types of furnace : Muffle, furnace, Blast furnace  4.3    Extraction processes of Haernatite copper pyrite ores : Crushing concentration, reduction, refining. 4.4    Properties of iron and copper : Hardness, tensile strength, toughness, malleability, ductility, refractoriness, fatigue resistance, specific gravity, specific heat, brazing, castability stiffness. 4.5    Preparation of alloys (Fusion and compression method). 4.6    Ferrous alloys : Low carbon, medium carbon, high carbon steels. 4.7    Non-ferrous alloy : Brass, Bronze Duralumin, Tinman solder, Woods metal. 4.8    Cement : Types, Biocement and Portland cement, constituents, setting and hardening applications 4.9    Lime : Classification, constituents, setting and hardening application. 4.10    Refactory material ; Types, properties Unit - II    Water treatment     5.1    Hardness classification  5.2    Hard water in boilers and prevention Boiler corrosion, caustic embrittlement priming and foaming, scales and sludges  5.3    Water softening : lime soda process (hot lime soda and cold time soda process), zeolite process, ion exchanges process (cation exchange and anion exchange), 5.4    Potable water treatment : Sedimetation coagulation, filtration and sterilization. 5.5    Waste water treatment : sewage treatment, BOD and COD of sewage water, Reverse Osmosis recycling of waste water. Unit - III    Fuels and Combustion     6.1    Fuel : Calorific value and ignition temperature, classification, 6.2    Solid fuels : Coal, Classification and composition, proximate analysis, ultimate analysis, bomb calorimeter carbonization of coke by Otto Hofmann’s oven. 6.3    Liquids fuels : Fractional distillation of crude petroleum, boiling range, composition, Properties knocking cracking, Octane number and cetane number. 6.4    Gaseous fuels : Boigas, LPG and CNG, Combustion equation of gaseous fuels mass and volume of air required for complete combustion.