A. Class II stone
B. Densite
C. Class I stone or hydrocal
D. Model or lab plaster
Correct Answer: Class I stone or hydrocal ✔
Last Updated: February 07, 2020
Related MCQs
- Plaster mix__________?
- A rough / Chalky surface of the cast is due to__________?
- The setting expansion of gypsum products can be reduced by__________?
- Most commonly used retarder in gypsum__________?
- Gypsum product having least expansion__________?
- Gillmore needle is used for__________?
- Setting of POP is result of__________?
- Type I gypsum product is also called__________?
- Plaster of paris __________?
- As per DNA No. 25, minimum amount of setting expansion required for type V gypsum products__________?
- The main difference between dental stone and dental plaster is__________?
- Gypsum is used for__________?
- 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__________?
- Balanced stone is dental stone__________?
- Impression plaster containing potato starch is called__________?
- Powders of dental plaster and dental stone differ mainly in__________?
- Beta hemihydrate particles absorb__________?
- 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__________?
- The strength of gypsum prouducts is generally expressed in terms of__________?
- The function of 2% potassium sulphate in a gypsum product is__________?
- Finer particle size of silica__________?
- ADA specification number of gypsum products are described under__________?
- Modiffiers are added to gypsum mainly to__________?
- Placing cast under tap water is to be avoided as__________?
- The β (Beta) hemihydrate of gypsum requires more water to float its powder particles because__________?
- In plaster of paris the setting time is primarily altered by__________?
- Which is gypsum product__________?
- The most commonly used accelerator in gypsum product is__________?
- The hygroscopic technique is associated with__________?
- Accelerators and retarders are used with gypsum products mainly to control__________?
- The main ingredient in dental plaster in__________?
- Die is__________?
- Plaster of paris is mixed in__________?
- Water of reaction needed to react completely with 100 g of calcium sulphate hemihydrates to convert it to calcium sulphate dihydrate__________?
- Green strength with reference to plaster means__________?
- Water powder ratio of dental stone and plaster is respectively__________?
- Model plaster (white) used to cast study models before mixing with water, is largely composed of__________?