A. Gold-Copper
B. Nickel-Chromium
C. Nickel-Titanium
D. Silver-Palladium
The term ordered hardening heat treatment used in which of the following dental alloys ? Read More »
Dental Materials, Medical Mcqs, Metallurgy 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
A. Increase the strength
B. Counter balance contraction of gypsum during heating
C. aid in hygroscopic expansion
D. Increase the shelf life of investment
Quartz is added to gypsum bonded investment to______________? Read More »
Dental Materials, Medical Mcqs, Metallurgy A. Soft hardening treatment
B. Hard hardening treatment
C. Precipitating heat treatment
D. Stress relieving heat treatment
Annealing is also known as_______________? Read More »
Dental Materials, Medical Mcqs, Metallurgy A. Hydrogen
B. Natural gas
C. Propane
D. Acetylene
The best fuel gas when used with oxygen is______________? Read More »
Dental Materials, Medical Mcqs, Metallurgy A. Propane
B. Acetylene
C. Natural gas
D. Hydrogen
A. Gold solder and borax flux
B. Gold solder and fluoride flux
C. Silver Solder and borax flux
D. Silver solder and fluoride flux
Solder and flux used for joining Elgiloy wires are_____________? Read More »
Dental Materials, Medical Mcqs, Metallurgy A. Prolonged heating:
B. Rapid heating me
C. Water film contamination
D. Too high pressure during casting
Fins and spines on the casting is seen due to_______________? Read More »
Dental Materials, Medical Mcqs, Metallurgy A. More
B. Less
C. Equal
D. Depends on the alloy type
A. Passivity
B. High Fusion Temperature
C. High Molecular Weight
D. Co-efficient of Thermal Expansion
In Base metal alloys, Corrosion resistance occurs due to___________________? Read More »
Dental Materials, Medical Mcqs, Metallurgy