The residue of coal decomposition that is used in the manufacture of steel is called coal gascokecoal tar

The correct answer for the question that is being presented above is this one: "coke." The residue of coal decomposition that is used in the manufacture of steel is called coke tar. The coke tar is mostly the waste after the coal decomposition that is used in steel manufacturing.

Dall of the above all of the choices make sense

Answera discharge of static electricity;