Percentage of gold in high noble alloy is______________?

Related Mcqs:

1. The percentage of copper in high copper alloy is______________?

   A. 10-12%
   B. 0-6%
   C. 13-30%
   D. 20-30%

2. Gold content of an 18 carat alloy is______________?

   A. 25%
   B. 50%
   C. 75%
   D. 100%

3. White gold alloy predominantly is______________?

   A. Gold added with palladium
   B. Gold added with calcium
   C. Gold with much of chromium
   D. Gold with silver

4. 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

5. Percentage of tin in low copper alloy is______________?

   A. 30-35%
   B. 26-28%
   C. 13-32%
   D. 22-30%

6. In non zinc containing dental amalgam alloy the percentage of zinc present is______________?

   A. Less than 0.02%
   B. Less than 0.1%
   C. Less than 0.01%
   D. None of the above

7. 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

8. Addition of large amounts of platinum to a casting gold alloy will________________?

   A. Decrease its strength and ability to be hardened
   B. Decrease its tarnish resistance
   C. Increase its fusion temperature
   D. Redden the alloy

9. The contraction of gold alloy on solidifying is approximately_____________?

   A. 0.4%
   B. 1.4%
   C. 2.4%
   D. 3.4%

10. The stiffness of a dental gold alloy is determined by its________________?

    A. Proportional limit
    B. Modulus of elasticity
    C. Ultimate tensile strength
    D. Flow