Question

7. Write about the preparation of plaster of Paris and its uses..​

Answer 1

Answer:

Plaster of Paris is prepared by heating gypsum to a temperature of 373K. When gypsum is heated to a temperature of 373k ,It loses three-Fourths of its water of crystallisation and forms Plaster of Paris.

uses

1)Used in making casts and patterns for molds and statues.

2)Used as the cement in ornamental casting and for making decorative materials.

3)Used as a fireproofing material and for making chalks.

4)Used in hospitals for immobilizing the affected part in case of bone fracture or sprain.

5)Used to fill small gaps on walls & roofs.

Explanation:

Answer 2

Uses of Plaster of Paris:

Plaster of Paris founds its usage in the following areas:

• 3D Printing: Gypsum plaster can be used for 3D Printing. The water is applied by the inkjet head.

• Architecture and Decorations: Plaster of Paris is used to produce fine artwork for decoration and beautification of monuments and buildings. It is also used to imitate wood or stone which is found in ancient buildings and monuments.

• During Burial Services: Plaster of Paris is used by executives of funeral houses in order to remake the damaged tissues and fill up the wounds.

• Medicines: It is used as a mould and casts. It is used to heal broken bones and cast into a supportive coating known as an orthopaedic cast.

• Fireproofing and fire protection systems

Preparation of Plaster of Paris:

Plaster of Paris is prepared from the chemical compound, calcium sulphate dihydrate, which is also known as, gypsum. Gypsum is represented by the chemical formula CaSO₄.2H₂O. POP is manufactured by heating the element gypsum at a very high temperature of about 373K. When this happens at such a high-temperature value of 373K, approximate about three-fourths of its water of crystallisation is lost. forming Pop.