Question

Choose the correct sequence of using plaster of paris in mold making
(A) Mixing plaster with water and pour
(B) Apply a release agent to model
(C) Allow plaster to set
(D) Prepare the model and attach the cottle
(E) Remove the model
Choose the correct answer from the options given below:

• A. (E), (A), (B), (C), (D)
• B. (A), (B), (C), (D), (E)
• C. (A), (C), (B), (D), (E)
• D. (C), (B), (D), (A), (E)

Hint:

The process for plaster of Paris mold making is: Mix → Apply release agent → Set plaster → Attach cottle → Remove model.

Answer 1

The Correct Option is B

Step 1: Understanding the mold-making process.
The process starts with mixing plaster with water and pouring (A), followed by applying a release agent to the model (B) to avoid the plaster sticking. Next, you allow the plaster to set (C). After that, you prepare the model and attach the cottle (D), and finally, remove the model (E) after the plaster has fully set.
Step 2: Analyzing the options.
- (1) (E), (A), (B), (C), (D): Incorrect, as removing the model should come last, not first.
- (2) (A), (B), (C), (D), (E): This is the correct sequence.
- (3) (A), (C), (B), (D), (E): Incorrect, applying the release agent (B) should come before the plaster is set.
- (4) (C), (B), (D), (A), (E): Incorrect, the order of steps is wrong.
Step 3: Conclusion.
The correct sequence is (A), (B), (C), (D), (E), which is option (2).