Question

Which zone of a flame does a goldsmith use for melting gold and silver and why?

Answer 1

The goldsmith uses the outermost zone of the flame to use for melting gold and silver because it is the hottest part of the flame and undergoes complete combustion.

• The outer zone of a flame is blue:It is a non-luminous zone.

• In this zone, complete combustion of the fuel takes place because there is plenty of air around it.

• The outermost zone has the highest temperature in the flame.

• It is the hottest part of the flame.