Discussion
Which of the following metal is generally used for making filaments of bulb?
Answer: A
Tungsten is used for bulb filaments.
It has the highest melting point of any metal, 3,410 °C, so it can be run white-hot without melting, and its low vapour pressure means it evaporates slowly. The bulb is filled with argon or nitrogen to slow that evaporation further.
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