Correct option is A
The correct answer is: A) Half molecules of water
Explanation:
- Plaster of Paris (POP) is chemically Calcium Sulfate Hemihydrate (CaSO₄·½H₂O).
- The formula indicates that for every molecule of CaSO₄, half a molecule of water is present.
- POP is obtained by heating Gypsum (CaSO₄·2H₂O) at about 373K (100°C), which removes 1.5 water molecules, forming CaSO₄·½H₂O.
Information Booster:
- Formation Reaction:
- Uses of POP:
- Used in medical bandages (fractures).
- Used for making statues, decorative items, and wall coatings.
- Used in construction for quick-setting materials.
- Rehydration of POP: POP reacts with water to form gypsum again.
English
100 Questions
100 Marks
90 Mins
