Multiple choice

The presence of_______ increases the rate of setting of Plaster of Paris

  1. nacl

  2. Na2So4

  3. CaCl2

  4. None of these

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

Sodium chloride (NaCl) acts as an accelerator for the setting of Plaster of Paris. When NaCl is added to the plaster slurry, it increases the rate of hydration and causes faster setting by providing additional ions that speed up the crystallization process.