The product, which is obtained by calcining gypsum under steam pressure at 120-130°C or by dehydrating gypsum in the presence of sodium succinate is_______________?

Related Mcqs:

1. The best pickling solution for gypsum bonded investment is_______________?

   A. Hydrochloric acid B. Nitric acid C. Sulphuric acid D. Phosphoric acid...

2. The most commonly used accelerator in gypsum product is___________________?

   A. Sodium fluoride B. Potassium fluoride C. Potassium sulfate D. Aluminium sulfate...

3. The function of 2% potassium sulphate in a gypsum product is_____________?

   A. To regulate the setting expansion B. Regulate setting time C. Acts as retarder D. None...

4. Type I gypsum product is also called_______________?

   A. Impression plaster B. Class I stone / Hydrocal C. Class II stone/Densite D. Model plaster...

5. Gypsum product having least expansion_____________?

   A. Impression plaster B. Model plaster C. Stone plaster D. Die stone...

6. Steam under pressure in used in ________ sterilization?

   A. Pasteurization B. Autoclave C. Kochs sterilizer D. hot air oven...

7. Modiffiers are added to gypsum mainly to_______________?

   A. Modify setting time B. Modify setting expansion C. Modify strength D. Decrease the porosity...

8. ADA specification number of gypsum products are described under____________?

   A. 1 B. 4 C. 12 D. 25...

9. As per DNA No. 25, minimum amount of setting expansion required for type V gypsum products_______________?

   A. 0.05 B. 0.10 C. 0.15 D. 0.20...

10. The setting expansion of gypsum products can be reduced by________________?

    A. Increased spatulation B. Adding potassium sulfate C. Less water powder ratio D. Allowing setting under water...