Question

Which property of Plaster of Paris makes it useful for quick repairs?

• A. Water-resistant
• B. Quick setting when mixed with water
• C. Transparent
• D. Flexible

Hint:

Plaster of Paris is valued for its ability to set quickly when mixed with water, which makes it ideal for emergency repairs.

Answer 1

The Correct Option is B

Step 1: Understanding Plaster of Paris.
Plaster of Paris has the property of setting quickly when mixed with water. This quick setting makes it useful for repairs, molding, and casting.
Step 2: Analysis of options.
- (1) Water-resistant: Incorrect, Plaster of Paris is not water-resistant once set.
- (2) Quick setting when mixed with water: Correct, this is the primary property that makes it useful for quick repairs.
- (3) Transparent: Incorrect, Plaster of Paris is opaque.
- (4) Flexible: Incorrect, Plaster of Paris becomes hard and brittle once set.
Step 3: Conclusion.
Thus, the correct answer is (2) Quick setting when mixed with water.