How is charcoal obtained from wood? Why is charcoal considered a better fuel than wood?

Question

How is charcoal obtained from wood? Why is charcoal Why is charcoal considered a better fuel than wood?

Answer 1

Charcoal is obtained from wood by destructive distillation of wood. Charcoal is considered a better fuel than wood because 

(i) it has higher calorific value than wood. 

(ii) it does not produce any smoke on burning.