Question

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> How is charcoal prepared?

Answer 1

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Charcoal is usually produced by slow pyrolysis i.e., the heating of wood or other substances in limited supply/absence of oxygen.