Question
Download Solution PDFWhich metal is used for making bulb filaments?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is Tungsten.Key Points
- Tungsten (74W) has its atomic number 74.
- Tungsten is used in filaments of incandescent light bulbs.
- Tungsten is used to make counterfeit gold bars because of its density which is similar to that of gold.
- Tungsten carbide is used in drill bits and mining tools.
Additional Information
- Iron (26Fe) has its atomic number 26.
- Red colour in blood is from the iron in hemoglobin, which helps to carry oxygen from the lungs to cells
- Iron used to make electricity pylons, bicycle chains and rifle barrels.
- Copper is a chemical element with the symbol Cu and atomic number 29.
- It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity.
- Silicon is a chemical element with the symbol Si and atomic number 14.
- It is a hard, brittle crystalline solid with a blue-grey metallic luster, and is a tetravalent metalloid and semiconductor.
Last updated on Jul 1, 2025
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