Energy change takes place on mixing the constituents of air together.
True
False
At what temperature can oxygen be liquefied into a bluish liquid by applying high pressure?
–183°C
–182°C
–173°C
–184°F
Match the columns by dragging.
Catalyst
Liquid oxygen
Nitrogen
Carbon dioxide
Hail
Increases the rate of a reaction
Rocket propellant
Delays various forms of oxidation processes
Manufacture of baking soda and washing soda
Small balls of ice