8. Why is nitrogen preferred in the welding and cooling of materials? a) It is an inert gas b) It is non-toxic c) It’s a gas and can easily be handled d) It has an extremely low freezing point
Answer: a Explanation: Non Toxic gasses such as argon are also available. Nitrogen gas, on the other hand, is still the favored gas since it prevents any undesirable oxidation or explosions. This prevents metals from corroding in the welding business. Nitrogen is utilized in food packaging because it creates a pressured environment that prevents container collapse.
