Gypsum product having least expansion_____________?

Related Mcqs:

Model plaster (white) used to cast study models before mixing with water, is largely composed of____________?

A. CaO B. CaCO3 C. (CaSO4)2-½H2O D. CaSO4-2H2O...

The β (Beta) hemihydrate of gypsum requires more water to float its powder particles because______________?

A. They are more regular in shape and dense B. They are more regular in shape and highly porous C. They are more irregular in shape and porous D. They are more dense and prismatic in shape...

Balanced stone is dental stone_______________?

A. Which undergoes rapid expansion B. In which accelerators or retarders have been added according to need C. In which amount of water of hydration is controlled D. In which the crystals are all of uniform size...

The strength of the gypsum specimen when the water in excess of that required for the hydrate of the hemihydrate is left in the specimen is called____________?

A. Dry strength B. Green strength C. Water strength D. Compressive strength...

A rough / Chalky surface of the cast is due to_______________?

A. Not waiting for 20 min before pouring B. High speed accelerator C. Air incorporation in the mix D. All of the above...