How does electrical conductivity of semiconductors vary with temperature?

The electrical conductivity of semiconductor is

How does the electrical conductivity of super- conductors vary with temperature ?

why does the electrical conductivity of semiconductors increse with rise in temperature?

why does the electrical conductivity of semiconductors increase with rise in temperature?

Statement I : Electrical conductivity of semiconductors increases with rise in temperature. Statement II : There is a small energy gap between conduction band and valence band.

The electrical resistivity of a semiconductor :

How does the conductivity of a semiconductor change if its temperature is raised ?

Assertion (A) : The electrical conductivity of a semiconductor increases with increase in temperature. Reason (R ) : With increase in temperature, large number of electrons from the valence band can jump to the conduction band.

when the electrical conductivity of a semiconductor is due to the breaking of its covalent bonds, then the semiconductor is said to be