Question

19. The outer zone of a flame is usually worked upon by goldsmiths. Why?​

Answer 1

The goldsmith uses the outermost zone of the flame to use for melting gold and silver because it is the hottest part of the flame and undergoes complete combustion.

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Answer 2

Answer:

Solution: The goldsmith uses the outermost zone of the flame to use for melting gold and silver because it is the hottest part of the flame and undergoes complete combustion.