Die is________________?
Die is________________? A. Impression of single tooth B. Impression of whole teethC. Replica of single tooth D. Replica of whole teeth
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Die is________________? A. Impression of single tooth B. Impression of whole teethC. Replica of single tooth D. Replica of whole teeth
Plaster of paris is mixed in________________? A. Plastic bowlB. Rubber bowl C. Glass bowl D. Metal bowl
Water of reaction needed to react completely with 100 g of calcium sulphate hemihydrates to convert it to calcium sulphate dihydrate______________? A. 18.6ml B. 22.2ml C. 30.4ml D. 45.3ml
Green strength with reference to plaster means_____________? A. Dry strength B. Compressive strength C. Strength of dental stone due to green colourD. The wet strength
Water powder ratio of dental stone and plaster is respectively_________________? A. 0.28 and 0.6 B. 0.6 and 0.28 C. 0.6 and 3.2 D. 0.28 and 0.98
Model plaster (white) used to cast study models before mixing with water, is largely composed of____________? A. CaO B. CaCO3C. (CaSO4)2-½H2O D. CaSO4-2H2O
White gold alloy predominantly is______________? A. Gold added with palladium B. Gold added with calcium C. Gold with much of chromium D. Gold with silver
In type II gold alloys _______ Karat gold is used? A. 24 K B. 22 KC. 18 K D. 10 K
The material used in its pure form in dentistry is______________? A. Composite B. SilverC. Gold D. Amalgam
Cohesion of gold foil is an example of______________? A. Atomic attraction and welding B. Annealing C. Wedging D. Adaptation