Nitrogen Applications and Properties

What percentage of the air is made up of nitrogen?

• 21%

• 78%

• 10%

• 50%

Why can't plants directly use atmospheric nitrogen?

• It is too abundant.

• It is too cold.

• It is too reactive.

• The nitrogen-nitrogen triple bond is very strong.

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

• Contact Process

• Solvay Process

• Ostwald Process

• Haber Process

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

• It is more reactive.

• It is cheaper and more readily available.

• It is heavier.

• It is more colorful.

What is the purpose of using nitrogen in food packaging?

• To add flavor

• To change the color of the food

• To increase shelf life by preventing bacterial growth

• To make the packaging lighter

Which gas is commonly used in gas chromatography due to its abundance?

• Carbon Dioxide

• Nitrogen

• Oxygen

• Helium

At what temperature does nitrogen boil?

• 100 degrees Celsius

• -273 degrees Celsius

• 0 degrees Celsius

• -196 degrees Celsius

What is cryotherapy primarily used for in the medical field?

• Heating tissues

• Removing warts and skin abnormalities

• Enhancing blood circulation

• Increasing body temperature

What is the term for research conducted at very low temperatures?

• Thermodynamics

• Cryogenics

• Hydrodynamics

• Aerodynamics

Why is liquid nitrogen used in some industrial reactions?

• To add moisture

• To speed up the reaction

• To cool down highly exothermic reactions

• To increase pressure