A. Iridium
B. Ruthinium
C. Indium
D. Platinum
Related Mcqs:
- 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 - Quartz in investment material is added for_______________?
A. Strength
B. Expansion components for casting shrinkage
C. Decrease strength
D. Contraction - The deoxidizing agent added to dental alloys is______________?
A. Palladium
B. Silver
C. Copper
D. Zinc - Quartz is added to gypsum bonded investment to______________?
A. Increase the strength
B. Counter balance contraction of gypsum during heating
C. aid in hygroscopic expansion
D. Increase the shelf life of investment - Nickel is added to wrought gold alloys as______________?
A. Strengtherner
B. Hardener
C. Whitens the alloy
D. Scavenger - In porcelain metal elements are embedded in the matrix of________________?
A. Rubber matrix
B. Glass
C. Plastic
D. Resin matrix - Gallium and indium added to Amalgam replace______________?
A. Silver
B. Tin
C. Mercury
D. Zinc - Modiffiers are added to gypsum mainly to_______________?
A. Modify setting time
B. Modify setting expansion
C. Modify strength
D. Decrease the porosity - Lenolin is added is ZOE paste to______________?
A. Decrease flow
B. Increase flow
C. Accelerate reaction
D. Decrease irritation due to eugenol - Hydroquinone is added to methyl methacrylate monomer_________________?
A. To prevent polymerization during storage
B. To initiate release of free radicalls
C. To enable polymerization reaction at room temperature
D. All of the above
