In plaster of paris the setting time is primarily altered by_________________?
Correct answer: B. Addition of accelerators and retarders
- A. Altering P / L Ratio
- B. Addition of accelerators and retarders
- C. Speed and length of hand spatulation
- D. Altering temperature of mixing water
Explanation
The most controlled way to alter plaster setting time is by adding accelerators or retarders. Water temperature, powder-liquid ratio, and spatulation also influence setting but are less suitable as the primary answer.
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