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Which zone of a flame does a goldsmith u...

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

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A goldsmith uses the outer zone (non-luminous zone) of a candle flame to melt gold and silver because it is the hottest zone and has more temperature.
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PEARSON IIT JEE FOUNDATION-COMBUSTION AND FLAME -CLASSROOM CORNER Short Answer Type Questions
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  10. Does all combustible substances give out a flame while burning?

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  11. Why does charcoal not produce flame?

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  12. Which fuel does not burn with a flame? Comment.

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  13. Does magnesium burn with a flame? Explain in your own words.

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  14. Explain why how flame is formed.

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  15. Define incomplete and complete combustion.

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  16. Why is magnesium so flammable? Justify your answer.

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  17. What colour flame is the coolest in a candle?

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