Cleaning of base metal alloy is done by______________?

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. Which of the following statements about high copper silver alloy compared to conventional alloy is not true ?

   A. It has increased tensile and compressive strength
   B. It has poor tarnish and corrosion resistance
   C. It’s edge strength is greater
   D. Mercury content in the final restoration is less

3. 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

4. Crucible indicated for casting base metal alloys is______________?

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

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

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

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

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

7. 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

8. Advantage of titanium over other base metal alloys_______________?

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

9. Chemical tempering in porcelains is done to interrupt crack propagation by______________?

   A. Transformation toughening
   B. Dispersion of crystalline phase
   C. Inducing residual compressive strength
   D. All of the above

10. Wash or corrective impression is done by______________?

    A. Impression plaster
    B. Impression paste
    C. Alginate
    D. Rubber base impression material