Multiple choice

The chemical name of gypsum salt is

  1. calcium carbonate

  2. calcium hydroxide

  3. calcium oxide

  4. calcium sulphate

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

Gypsum is the common name for calcium sulphate dihydrate, CaSO4.2H2O. It is frequently used in construction materials like plaster of Paris.