Question

fuel
(1) I should have low calorifie value
(2) It should be expensive.
3) It should not produce any hazards during
transportation
(4) It should have high inition temperature.
Why do gold smiths use the outer most zone
of the flame?
(1) it has maximum luminosity​

Answer 1

Answer:

(4)

I hope this answer will help u

Answer 2

Explanation:

if fuel should3) not produce any hazards during transportation .

Goldsmith's use outer most zone of flame because it has highest temperature and it is hotter than other zones