Question.
Find out how many minerals are used to make a light bulb?
( Chapter - 5 Minerals and Energy Resources, Cass X NCERT Contemporary India -II )
Answer.
Both metallic and non-metallic minerals are used in electronic and electrical industries.
In the light bulb, important minerals are copper, aluminum, nickel, molybdenum, tungsten, mica, trona, silica, manganese, lead, etc.
Bulb filaments are made up of Molybdenum and Tungsten minerals.
Bulb wire is made up of copper and nickel.
Glass is made up of silica minerals.
The bulb fuse is made up of manganese, nickel, silicon, and copper alloy.
Trona is also known as soda ash which is an evaporite mineral. It is used to make glass bulbs.
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