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MHT CET Medical202621 April 2026Morning ShiftChemistrys Block ElementsActual

Which of the following substance does NOT contain CaCO ₃ ?

Options

  1. AMarble
  2. BChalk
  3. CLimestone
  4. DSlacked lime

Correct answer

D. Slacked lime

Step-by-step solution

Marble, chalk, and limestone are all different natural forms of calcium carbonate ( CaCO ₃ ). Slaked lime is calcium hydroxide, which has the chemical formula Ca(OH) ₂ . Thus, slaked lime does not contain CaCO ₃ . Answer: Slacked lime

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