Austenite is an alloy of iron of and carbon with the iron in______________?

Related Mcqs:

1. The yield strength of AUstenite (NiTi alloy) is______________?

   A. 100 Mpa
   B. 240 Mpa
   C. 560 Mpa
   D. 700 Mpa

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. Mercury rich condition in a slow setting amalgam alloy system in a resoration in______________?

   A. Accelerated corrosion
   B. Fracture of the restoration
   C. Merginal damage
   D. All of the above

4. Increased iron binding capacity and decreased serum iron is seen in which anemia________________?

   A. Iron deficiency
   B. Aplastic
   C. Sickle cell
   D. Chronic infections

5. 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

6. 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

7. The most commonly used Titanium alloy for dental and medical purposes is________________?

   A. Ti 6Al 4V
   B. Ti 5Al 4V
   C. Ti 5Al 5V
   D. Ti 6Al 6V

8. Percentage of gold in high noble alloy is______________?

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

9. Microstructure of cobalt chromium alloy in cast condition is______________?

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

10. Cleaning of base metal alloy is done by______________?

    A. Warm HCI
    B. Cold HF
    C. Cold H2SO4
    D. Sand blasting with aluminium oxide