Question

The number of molecules in a conduction band ___________

(a) Increases with fall in temperature

(b) Decreases with a rise in temperature

(c) Increases with a rise in temperature

(d) Does not depend upon the temperature

I have been asked this question in an interview for job.

This question is from Molecular Aggregation topic in division Materials and their Properties of Engineering Chemistry I

Answer 1

Correct choice is (c) Increases with a rise in temperature

The explanation is: The number of molecules in the conduction band increases with the rise in temperature. At high temperatures, randomness increases and more molecules move towards the conduction band.