The term ordered hardening heat treatment used in which of the following dental alloys ?

Related Mcqs:

1. The castability of chromium-cobait base metal alloys when compared to gold based noble metal alloys is_______________?

   A. More B. Less C. Equal D. Depends on the alloy type...

2. Reduction in the fusion temperature of dental gold casting alloys is caused by presence of______________?

   A. Platinum B. Copper C. Silver D. Gold...

3. The deoxidizing agent added to dental alloys is______________?

   A. Palladium B. Silver C. Copper D. Zinc...

4. Modern dental noble metal casting alloys generally have equiaxed fine grain structures because of the incorporation of small amounts of______________?

   A. Chromium B. Indium C. Irridium D. Palladium...

5. Compared with dental alloys, CERAMICS show____________________?

   A. High ductility B. High hardness C. Low esthetic value D. Susceptibility to brittle fracture...

6. High copper dental amalgams are superior to other amalgams because high copper dental amalgems______________?

   A. Have less marginal breakdown B. Are workable at lower Hg-alloy ratio C. Have a higher ratio of tensile to compressive strength D. Have less resistance to tarnish and corrosion...

7. Powders of dental plaster and dental stone differ mainly in____________?

   A. Solubility B. Shelf life C. Chemical formula D. Particle porosity...

8. The main difference between dental stone and dental plaster is______________?

   A. Chemical composition B. Self life C. Sharpe and size of particles D. Solubility in water...

9. The American dental association (ADA) specification number for non-aqueous elastomeric dental impression material is______________?

   A. 19 B. 20 C. 21 D. 26...

10. Heat hardening is the process done at_______________?

    A. Heating 750°C and slowly cooling to zero degree B. Heating quickly upto 450°C followed by sudden quenching C. Heating upto 250°C for 15 to 30 min D. Heating at 750°C and then quenching to room temperature...