Indium in metal alloys_______________?

Related Mcqs:

1. Advantage of titanium over other base metal alloys_______________?

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

2. In a metal ceramic crown for a FPD the function of tin, indium which are readily oxidized minor constituents is to________________?

   A. Improve bonding
   B. Decrease porosity
   C. They react with the porcelain opaque layer, which masks the metal
   D. Improves the thermal expansion between the metal and porcelain

3. Gallium and indium added to Amalgam replace______________?

   A. Silver
   B. Tin
   C. Mercury
   D. Zinc

4. 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

5. 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

6. The porosity formed due to simultaneous nucleation of solid grains and gas bubbles at the first moment that metal freezes at the mold walls is called__________?

   A. Pinhole porosity
   B. Gas inclusion porosity
   C. Micro porosity
   D. Subsurface porosity

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

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

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

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

9. 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

10. Cleaning of base metal alloy is done by______________?

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