Page 8 - COMPOSITION AND PROPERTIES OF AIR
P. 8

4. OTHER GASES:




                    •Air also contains other gases such

                    as argon, neon, hydrogen and
                    helium.




                    •Argon is used in making light bulbs

                    and fluorescent tubes.



                    5. Water Vapour:



                    • Air contains water vapour which

                    helps maintain the water cycle.

                    Water vapour is formed due to the
                    evaporation of water from

                    different water bodies such as

                    rivers, lakes and seas. When air
                    comes in contact with cold

                    surfaces, it is these vapours that

                    turn into or condense into droplets
                    of water.
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