Multiple choice general knowledge

Which is found in egg shells?

  1. CaCl

  2. CaNo3

  3. CaCO3

  4. CaSO4+NaCl

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Calcium carbonate (CaCO3) is the main chemical compound that provides the rigid structure of bird eggshells. The other options represent different calcium salts like chloride, nitrate, or sulfate, which do not constitute the shell material.