Question

which zone of a flame does a holdsmith use for melting gold and silver...explain why?

Answer 1

They use outer side(blue zone) to melt gold or silver.

Welcome......

Answer 2

Hello mate

here's your answer

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There are three zones in a flame. The outer zone is used by goldsmith for melting gold and silver because the outer zone is the most hottest zone, it is blue in colour and it is luminous.

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Hope it helps you