Question

All the compounds given below contain carbon atoms except:

• A. marble
• B. fat molecule
• C. wool
• D. gypsum

Answer 1

The correct option is D gypsum

Gypsum $\left({\mathrm{CaSO}}_4.2H_{2}O\right)$ does not contain carbon atom in it.

• Marble is a naturally occuring stone containing calcium carbonate $\left({\mathrm{CaCO}}_3\right)$ in it.
• Fat molecules are long chain carbon compounds.
• Wool is obtained from the fleece of animals like sheep, yak, etc. It is made up of a protein fiber called keratin, which is a long chain carbon molecule.