Chemistry
Grade-8
Easy
Question
The element present in the molecular formula of calcium carbonate is/are:
- Carbon and oxygen
- Carbon, hydrogen, and oxygen
- Carbon, calcium, and oxygen
- Calcium and carbon
Hint:
NaHCO3 is sodium hydrogen carbonate, an example of carbonate compound.
The correct answer is: Carbon, calcium, and oxygen
The correct option is c)Carbon, calcium, and oxygen.
Calcium carbonate is a chemical compound with the chemical formula CaCO3, composed of three main elements: carbon, oxygen and calcium. Calcium carbonate is a dietary supplement used when the amount of calcium in the diet is inadequate. Calcium is needed by the body for healthy bones, muscles, nervous system and heart.
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