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Q.

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

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a

Middle zone

b

Lower zone

c

Inner zone

d

Outer zone

answer is D.

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Detailed Solution

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Goldsmith uses the outer zone of a flame for melting gold and silver. This is because, in this zone of flame, the temperature is the highest helping these metals to melt easily.

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