Write a short note on coke.

•Coke is a fuel with a high carbon content and few impurities, usually made from coal.

•It is the solid carbonaceous material derived from destructive distillation of low-ash, low-sulphur bituminous coal.

•Coke is used as a fuel and as a reducing agent in smelting iron ore in a blast furnace.

•The carbon monoxide produced by its combustion reduces iron oxide (hematite) in the production of the iron product.

•Coke is commonly used as fuel for blacksmithing.

•It is used as fuel in stoves and furnaces.