2017 · Q10
Which one of the following is not a semiconductor ?
General KnowledgePhysics
- ASilicon
- BGermanium
- CQuartz
- DGallium arsenide
Explanation
Silicon, germanium, and gallium arsenide are all semiconductors. Quartz (crystalline SiO₂) is an insulator — valued for its piezoelectric property in watches — not a semiconductor. Hence C.