Choose only the wrong statement from the following :

Options

A. In conductors the valence and conduction bands may overlap
B. Substances withenergy gap of the order of 10 eV are insulators
C. The resistivity of a semiconductor increases with increase in temperature
D. The conductivity of a semiconductor increases with increase in temperature

Answer

C

Explanation

(a),(b) and (d) are correct. (c ) is wrong.
Resistivity of a semiconductor decreases with increase in temperature .