Which of the following is NOT used to make toothpaste?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. Galena.
- Some common abrasives used in the manufacture of toothpaste include sodium bicarbonate, calcium carbonate, dicalcium phosphate, limestone, hydrated silica and alumina.
- While galena, also known as the lead glance is not used to make toothpaste.