Crucible indicated for casting base metal alloys is______________?

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. 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

3. 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

4. In Base metal alloys, Corrosion resistance occurs due to___________________?

   A. Passivity
   B. High Fusion Temperature
   C. High Molecular Weight
   D. Co-efficient of Thermal Expansion

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

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

6. Coefficient of thermal expansion of metal-ceramic alloys is________________?

   A. Same as porcelain
   B. More than porcelain
   C. Less than porcelain
   D. More than or equal to porcelain but not less

7. The deoxidizing agent added to dental alloys is______________?

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

8. Linear coefficient of thermal expansion of metal used for metal caramic restoration range from________________?

   A. 11.5-12.5×10-6/°C
   B. 10.5-11.5×10-6/°C
   C. 13.5-14.5×10-6/°C
   D. 16.5-17.5×10-6/°C

9. Advantage of titanium over other base metal alloys_______________?

   A. Low weight
   B. Low cost
   C. Low strength
   D. Low melting point

10. Cleaning of base metal alloy is done by______________?

    A. Warm HCI
    B. Cold HF
    C. Cold H2SO4
    D. Sand blasting with aluminium oxide