Question

how is coke formed? and when

Answer 1

Coke is a fuel with few impurities and a high carbon content, usually made from coal. It is the solid carbonaceous material derived from destructive distillation of low-ash, low-sulphur bituminous coal. ... While coke can be formed naturally, the commonly used form is synthetic.

Answer 2

coke is formed from destructive distillation of coal.it is the process of heating coal In the absence of oxygen to obtain useful products.