Ranvir lives in a village and uses wood as a fuel. He studied in his school that charcoal is a better fuel than wood. He decided to use charcoal instead of wood.
$(a)$ How can Ranvir obtain charcoal from wood?
$(b)$ Why is charcoal considered a better fuel than wood? (Give two reasons)

(N/A) Charcoal is obtained by burning wood in a limited supply of oxygen (a process known as destructive distillation).
$(b)$ Charcoal is considered a better fuel than wood because:
$(i)$ It burns without producing a flame.
$(ii)$ It produces very little or no smoke compared to wood.
$(iii)$ It has a higher calorific value (heat-generating efficiency) than wood.