Q. In arc welding, Argon is used because of its
A) Ability to lower the melting point of the metal
B) Low reactivity with metal
C) High calorific value
D) High flammability
โ Correct Answer: Low reactivity with metal
Exam Insight
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A) Ability to lower the melting point of the metal
B) Low reactivity with metal
C) High calorific value
D) High flammability
โ Correct Answer: Low reactivity with metal
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