Question

Plaster of Paris is made from:

• A. Carrara Marble
• B. Salt Rock
• C. Gypsum
• D. Granite

Hint:

Plaster of Paris is commonly used in construction, sculptures, and molds, and is derived from heating gypsum.

Answer 1

The Correct Option is C

Step 1: Understanding Plaster of Paris.
Plaster of Paris is made by heating gypsum, which is a naturally occurring mineral. When gypsum is heated to around 150°C, it loses its water content and turns into a fine powder known as Plaster of Paris.
Step 2: Analysis of options.
- (1) Carrara Marble: A type of marble, not used to make Plaster of Paris.
- (2) Salt Rock: Not related to the production of Plaster of Paris.
- (3) Gypsum: Correct, Plaster of Paris is made from gypsum.
- (4) Granite: A hard rock, not used to make Plaster of Paris.
Step 3: Conclusion.
Thus, Plaster of Paris is made from gypsum.