Question

Why Goldsmith blows the uppermost part of the flame to melt gold or silver? Draw the Diagram of a flame with proper labelling.​

Answer 1

Explanation:

Because the uppermost part of the candle is the hottest than any other layer

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Answer 2

A Flame has three prominent layers which are formed on the basis of its Combustion.

Explanation:

• The outermost zone of a flame is a zone of complete combustion, also known as the luminous zone. Goldsmiths blow the outermost zone of a flame to melt gold or silver.
• This zone's ignition temperature is the highest, which aids in melting the metal the best for creating desired designs or patterns.
• Also, This is the zone of complete combustion so no residue is left on the surface of metals which does not makes them black.