How Is Nitrogen Used

This video tutorial explores nitrogen, which constitutes 78% of the air. It covers nitrogen's properties, its role in the nitrogen cycle, and its industrial applications. Nitrogen gas is crucial in the Haber process for ammonia production, food packaging, and gas chromatography. Liquid nitrogen is used for cooling exothermic reactions, preserving biological specimens, and in medical cryotherapy. The video highlights nitrogen's importance in various fields, emphasizing its role in reducing spoilage and supporting scientific research.

What percentage of the Earth's atmosphere is made up of nitrogen?

• 95%

• 50%

• 78%

• 21%

Which process uses nitrogen gas for the industrial production of ammonia?

• Haber process

• Ostwald process

• Contact process

• Solvay process

Why is nitrogen gas preferred over argon for creating unreactive atmospheres in industrial processes?

• Argon is less effective at preventing oxidation

• Nitrogen is cheaper and more readily available

• Nitrogen is more reactive than argon

• Argon is toxic

What is the primary reason nitrogen is used in food packaging?

• To add flavor

• To increase the weight of the package

• To prevent bacterial growth and extend shelf life

• To make the packaging more colorful

What is cryotherapy primarily used for in the medical field?

• To treat headaches

• To remove warts and skin abnormalities

• To cure infections

• To improve blood circulation