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ECAT Chemistry QUESTION #808
Question 1
Which is not a calcareous material?
  • Clay✔️
  • Marble
  • Lime
  • Marine shell
Correct Answer Explanation
Calcareous materials contain calcium carbonate \((\text{CaCO}_3)\). Marble, lime, and marine shells are all calcareous. Clay is an aluminosilicate and is not calcareous.