📊 Building Materials
Q. Asbestos
  • (A) Is a natural fibrous mineral substance
  • (B) Is composed of hydrous silicates of calcium and magnesium (CaSiO3, 3MgSiO3)
  • (C) Contains iron oxide and alumina
  • (D) All the above
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✅ Correct Answer: (D) All the above

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