14 Questions
What are some uses of oxygen mentioned in the text?
Planes carry oxygen supplies, divers and astronauts use oxygen, hospitals use oxygen for patients with breathing problems, oxygen is used in steel works, and in oxy-acetylene torches for cutting and welding metal.
Why is liquid nitrogen used in food factories?
Liquid nitrogen is used to quick-freeze food in food factories.
How is nitrogen used to store tissue samples in hospitals?
Nitrogen is used in hospitals to store tissue samples.
Explain the role of nitrogen in food packaging.
Nitrogen is flushed through food packaging to remove oxygen and keep the food fresh.
What is the purpose of using argon in tungsten light bulbs?
Argon provides the inert atmosphere in tungsten light bulbs to prevent the tungsten filament from burning away.
Why is neon used in advertising signs?
Neon is used in advertising signs because it glows red when a current is passed through it.
What makes helium suitable for filling balloons?
Helium is used to fill balloons because it is very light and safe.
How does an oxygen tent work in hospitals?
An oxygen tent in hospitals fits over the bed and pumps oxygen-rich air into it for patients with breathing problems.
What is the purpose of a catalytic converter in a car exhaust system?
To convert harmful gases into harmless gases by speeding up reactions using catalysts.
Which harmful gases are converted into harmless gases in the catalytic converter?
Oxides of nitrogen, carbon monoxide, and unburnt hydrocarbons.
What are the catalysts usually made of in a catalytic converter?
Platinum, palladium, and rhodium.
How are harmful gases adsorbed in a catalytic converter?
They are adsorbed onto the surface of catalysts.
What happens to the harmless gases after the reactions in the catalytic converter?
They flow out of the exhaust pipe.
Give an example of a reaction that occurs in the catalytic converter to convert harmful gases into harmless gases.
2NO (g) → N2 (g) + O2 (g)
Test your knowledge on the various uses of oxygen in different industries and settings, such as in planes, hospitals, and steel works. Explore how oxygen is utilized in oxygen masks, oxygen tents, steel production, and cutting and welding metal with oxy-acetylene torches.
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