A. Carbon content
B. Silica content
C. Gypsum
D. Copper
The strength of a gypsum investment is dependent on_______________? Read More »
Dental Materials, Medical Mcqs, Metallurgy A. Low fusing ceramic and high fusing alloys
B. Matching of coefficients of thermal expansion of ceramics and alloy
C. Bonding between ceramic and alloy
D. All of the above
Ideal requirement of metal ceramic casting____________? Read More »
Dental Materials, Medical Mcqs, Metallurgy A. Inlay wax type-II
B. Boxing wax
C. Modelling wax
D. Casting wax
A. 0.4%
B. 1.4%
C. 2.4%
D. 3.4%
The contraction of gold alloy on solidifying is approximately_____________? Read More »
Dental Materials, Medical Mcqs, Metallurgy A. Increases its toughness
B. Increases hardness
C. Increase ductility
D. decreases its toughness
Tempering of steel cause________________? Read More »
Dental Materials, Medical Mcqs, Metallurgy A. Wrought alloy
B. Palladium alloys
C. Cobalt-chrome alloys
D. Partial denture casting gold in hardened condition
A. Molybdenum
B. Germanium
C. Titanium
D. Chromium
A. Alpha form
B. Beta form
C. Gamma form
D. None of the above
Austenite is an alloy of iron of and carbon with the iron in______________? Read More »
Dental Materials, Medical Mcqs, Metallurgy A. Oxidizing zone
B. Reducing zone
C. Combustion zone
D. None of the above
Which zone is the hottest and efficient burning zone of the flame used for casting ? Read More »
Dental Materials, Medical Mcqs, Metallurgy A. Thin sprue
B. No reservoir
C. Investment heated strongly
D. Inadequate air discharge
Localised shrinkage porosity is seen when there________________? Read More »
Dental Materials, Medical Mcqs, Metallurgy