We know that goldsmith uses outermost layer of candle flame to melt the gold. But what will happen if he uses the innermost zone?What changes will occur?
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A flame mainly contains three parts; the outermost part, the middle part and the innermost part. The outer part of the flame provides the maximum heat, and it produces a blue colour.
Goldsmiths melt gold and silver with the use of outermost part of the flame because gold and silver have a high melting point and they require a maximum amount of heat.
The outermost part of the flame contains a high amount of heat, and it also allows the particles to undergo complete combustion.
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