Investment material used for cobalt-chromium alloys is_____________?

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. Microstructure of cobalt chromium alloy in cast condition is______________?

   A. Fibrous B. Homogeneous C. Inhomogenous D. amorphous...

3. Cobalt-Chrominum alloys contains_______________?

   A. 30% cobalt and 60% chrominum B. 60% cobalt and 30% chrominum C. 1% palladium D. 20% gold...

4. All of the following statements about cast cobalt alloy are true EXCEPT_____________?

   A. They have a modulus of elasticity twice that of gold alloys B. They are more rigid than gold alloys C. They have higher ductility than gold alloys D. They have a lower proportional limit than gold alloys...

5. Resistance to corrosion in a cobalt-chrome casting is due to presence of_______________?

   A. High quality iron B. Chrome C. Cobalt D. Nickel...

6. Passivating alloys are_______________?

   A. Cr, Al, Ti B. Cr, Mo, Ti C. Cr, Gold, Ti D. Cr, Fe, Ti...

7. The deoxidizing agent added to dental alloys is______________?

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

8. Nickel is added to wrought gold alloys as______________?

   A. Strengtherner B. Hardener C. Whitens the alloy D. Scavenger...

9. 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...

10. Dendrites in cst alloys form by mechanism of_________________?

    A. Constitutional superconductivity B. Constitutional supercooling C. Constitutional supergriting D. Constitutional supergraining...