Question : Limestone, chalk and marble are different forms of ____________.
Option 1: calcium carbonate
Option 2: sodium carbonate
Option 3: potassium carbonate
Option 4: magnesium carbonate
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Correct Answer: calcium carbonate
Solution : The correct answer is calcium carbonate.
Calcium carbonate (CaCO3) is the chemical that makes up chalk, marble, and limestone. Sedimentary rocks with an organic composition include limestone and chalk. The hard shells of extinct animals, such as corals and shellfish, have been left behind after their fleshy sections have broken down, forming these rocks. They belong to the calcareous group.
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Question : What is the chemical name of Marble?
Option 1: Magnesium oxide
Option 2: Sodium hydroxide
Option 3: Calcium hydroxide
Option 4: Calcium carbonate
Question : Which among the following is a covalent compound?
Option 1: Hydrogen chloride
Option 2: Magnesium hydroxide
Option 3: Calcium carbonate
Option 4: Sodium chloride
Question : The mineral constituent of chlorophyll is
Option 1: Iron
Option 2: Magnesium
Option 3: Calcium
Option 4: Potassium
Option 1: Calcium chloride
Option 2: Magnesium fluoride
Option 3: Sodium chloride
Option 4: Carbon tetrachloride
Question : Milkiness observed on passing of carbon dioxide through lime water is due to the formation of:
Option 1: calcium hydroxide
Option 2: calcium bicarbonate
Option 3: calcium carbonate
Option 4: calcium chloride
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