Nickel is added to wrought gold alloys as______________?

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

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

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

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

4. 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...

5. 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...

6. Which of the following physical property can be used to estimate indirectly the proportional limit of gold alloys ?

   A. Vickers’s hardness number B. Knoop hardness number C. Brinell hardness number D. Rockwell hardness number...

7. The deoxidizing agent added to dental alloys is______________?

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

8. The rapid decrease in tensile strength and increase in ductility of a wrought metal is seen in which stage of annealing ?

   A. Recovery stage B. Recrystallisation stage C. Grain growth stage D. All of the above...

9. Crucible indicated for casting base metal alloys is______________?

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

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

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