In semiconductors at room temperature,

Regarding a semiconductor,which one of the following is wrong?

State the conductivity and resistivity of a semiconductor.

Electrical conductivity of insulators is

The forbidden energy band gaps in conductors,semiconductors,and insulators are $E_{G1}$,$E_{G2}$,and $E_{G3}$ respectively. The relation among them is:

Read the following statements carefully:
$Y:$ The resistivity of a semiconductor decreases with an increase in temperature.
$Z:$ In a conducting solid,the rate of collision between free electrons and ions increases with an increase in temperature.
Select the correct statement from the following: