Discussion
Filament of electric bulb is made of _____.
Answer: B
The filament is made of Tungsten.
An incandescent bulb gives light by heating its filament to well over 2,000 °C. Tungsten has the highest melting point of all metals, about 3,422 °C, and a low rate of evaporation, so it can glow white-hot for hundreds of hours.
Copper and lead melt at about 1,085 °C and 327 °C, far too low. Silicone is a rubbery polymer, not a metal, and would burn.
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