Physics
In a conductor

There is no conduction band
The forbidden energy gap is very narrow
The valence band and the conduction band overlap each other
The forbidden energy gap is very wide

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Physics
A stone floor feels cold to the bare feet but a carpet on the same floor feels warm. This is because

The floor and carpet are at different temperatures
The human body maintains a constant temperature
The stone conveys the heat away from the feet more rapidly than the carpet
The carpet is a better conductor of heat than the stone

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