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Question
Which zone of a flame does a goldsmith use for melting gold and silver?
Which zone of a flame does a goldsmith use for melting gold and silver?
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Solution
The correct option is D Outer zone (blue)
A goldsmith uses the outer zone (non-luminous zone) of a candle flame to melt gold and silver because it is the hottest zone, has a very high temperature and complete combustion takes place in the outermost zone of the flame.
A goldsmith uses the outer zone (non-luminous zone) of a candle flame to melt gold and silver because it is the hottest zone, has a very high temperature and complete combustion takes place in the outermost zone of the flame.
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