Q. Which of the following is not a form of calcium carbonate?
Answer: Lime water
Notes: Limewater is the common name for a diluted solution of calcium hydroxide, Ca(OH)2. Calcium Carbonate is the carbonic salt of calcium (CaCO3). Calcite, aragonite and vaterite are pure calcium carbonate minerals. Industrially important source rocks which are predominantly calcium carbonate include limestone, chalk, marble and travertine.

This question is part of 40000+ General Studies MCQ Series Course on GKToday Android app. Question Number: 97 in Chemistry-6-Minerals and Ores in above course in App.