![](https://images.theconversation.com/files/383310/original/file-20210209-17-1vc8r8e.jpg?ixlib=rb-1.1.0&rect=1%2C67%2C997%2C498&q=45&auto=format&w=1356&h=668&fit=crop)
Coke
Coke is a grey, hard, and porous coal-based fuel with a high carbon content and few impurities, made by heating coal or oil in the absence of air—a destructive distillation process.
Coke is a grey, hard, and porous coal-based fuel with a high carbon content and few impurities, made by heating coal or oil in the absence of air—a destructive distillation process.