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: Plaster of Paris Composition.
Plaster of Paris is derived from gypsum, a naturally occurring mineral. Heating gypsum to approximately 150°C removes its water, resulting in a fine powder identified as Plaster of Paris.
Step 2: Evaluation of Alternatives.
- (1) Carrara Marble: A type of marble; not a constituent of Plaster of Paris.
- (2) Salt Rock: Irrelevant to Plaster of Paris manufacturing.
- (3) Gypsum: Correct. Plaster of Paris is produced from gypsum.
- (4) Granite: A robust rock; not utilized in Plaster of Paris production.
Step 3: Determination.
Consequently, Plaster of Paris is manufactured from gypsum.