Question

Which of the following oxides behaves as conductor or insulator depending upon temperature?

• A. $TiO$
• B. $Si{O}_2$
• C. $Ti{O}_3$
• D. $MgO$

Answer 1

Answer: (C)

$Ti{O}_3$

$Ti{O}_3$ behaves as conductor or insulator depending on temperature because of variation of energy gap between valence band and conduction band with the variation of temperature.

So, correct answer is option $C$.