Question

What special precautions should be taken during the preparation of plaster of paris

Answer 1

Plaster of Paris: A mixture of sand and cement that is used for spreading on ceilings or other structures which results in a smooth hard surface when dried is referred to as plaster of paris.

Precautions:

• Cold water should be made available to wash off the plaster.
• Protect the eyes by wearing goggles.
• Cover the face and hands using dust masks and gloves.
• Casting of faces and body parts should be avoided.
• Wet plaster must be handled properly.

Answer 2

Answer:

Following precautions should be taken:-

(1.) Cold water should be made available to wash off the plaster.

(2.) Protect the eyes by wearing goggles.

(3.) Cover the face and hands using dust makes

and gloves.

(4.) Wet plaster must be handled properly.

Explanation:

When Gypsum is heated at 373 K then Plaster of Paris is formed.

CaSo4.2H2O ------> CaSo4.1/2H2O + 3 H2O

( Gypsum ) ( Plaster of Paris )