The filament of a bulb is generally made up of tungsten because:

1 and 2 only

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1 and 3 only

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2 and 3 only

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1 only

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Solution

The correct option is C 2 and 3 only
The filament of the bulb should be a conductor which can sustain very high temperatures without melting.
Tungsten is a conductor of electricity and it can sustain high temperautres without melting.
Hence, statements 2 and 3 are correct.

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