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Q: What is chemical composition of Quartz material?
  • A. SiO
  • B. SiO₄
  • C. SiO₃
  • D. SiO₂
Correct Answer: Option D - Quartz is a hard, crystalline mineral composed of silica (SiO₂).
D. Quartz is a hard, crystalline mineral composed of silica (SiO₂).

Explanations:

Quartz is a hard, crystalline mineral composed of silica (SiO₂).