Compared with noble metals, base metals show_______________?

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. Percentage of gold in high noble alloy is______________?

   A. N 25%
   B. 25%
   C. >40%
   D. 0%

3. 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

4. Gases dissolved in molten metals are liberated when cooled giving rise to________________?

   A. Suckback porosity
   B. Gas inclusion porosity
   C. Localized shrinkage porosity
   D. Microporosity

5. Ceramics fired to metals are processed by_______________?

   A. Heat pressing
   B. Machining
   C. Sintering
   D. Slip casting

6. When two metals are completely miscible in liquid state and they remain completely mixed on solidifiation, the alloy formed is called________________?

   A. Solid solution
   B. Eutectic mixture
   C. Peritectic mixture
   D. Inter metallic compounds

7. The base constituents of dental waxes come from three main sources except______________?

   A. Animal
   B. Mineral
   C. Insect
   D. Vegetable

8. Crucible indicated for casting base metal alloys is______________?

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

9. The solvent flux used for base metal soldering is_______________?

   A. Boric acid
   A. Borax
   B. Fluoride
   C. Rouge

10. 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