Passivating alloys are_______________?

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. Cobalt-Chrominum alloys contains_______________?

   A. 30% cobalt and 60% chrominum
   B. 60% cobalt and 30% chrominum
   C. 1% palladium
   D. 20% gold

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

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

4. Crucible indicated for casting base metal alloys is______________?

   A. Carbon crucible
   B. Clay crucible
   C. Quartz crucible
   D. High melting plastic crucible

5. The deoxidizing agent added to dental alloys is______________?

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

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

   A. Gold-Copper
   B. Nickel-Chromium
   C. Nickel-Titanium
   D. Silver-Palladium

7. Which of the following cast gold alloys is used for fabricating partial denture frameworks______________?

   A. Type I – Soft
   B. Type II – Hard
   C. Type III – Hard
   D. Type IV – Extra Hard

8. The linear solidification shrinkage of Type IV Ni-Cr based alloys is_______________?

   A. 2.3%
   B. 1.56%
   C. 1.37%
   D. 3%

9. The gold alloys used for casting contain at least…. percent of precious metal according to ADA specification number 5________________?

   A. 55
   B. 65
   C. 75
   D. 85

10. Investment material used for cobalt-chromium alloys is_____________?

    A. Gypsum bonded
    B. Phosphate bonded
    C. Silica bonded
    D. None of the above