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

Related Mcqs:

1. Which of the following increases castability of base metal alloys________________?

   A. Tin
   B. Beryllium
   C. Molybdenum
   D. Carbon

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. In type II gold alloys _______ Karat gold is used?

   A. 24 K
   B. 22 K
   C. 18 K
   D. 10 K

4. 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

5. Crucible indicated for casting base metal alloys is______________?

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

6. 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

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

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

8. Compared with noble metals, base metals show_______________?

   A. Increased hardness
   B. Increased ductility
   C. Better biocompatibility
   D. Increased density

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

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

10. 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