A. Chromium
B. Indium
C. Irridium
D. Palladium
A. Strengtherner
B. Hardener
C. Whitens the alloy
D. Scavenger
Nickel is added to wrought gold alloys as______________? Read More »
Dental Materials, Medical Mcqs, Metallurgy A. Recovery recrystallization grain growth
B. Recrystallization recovery, grain growth
C. Grain Growth Recrystallization recovery
D. Melting point, grain growth, Recrystallization
Stages of annealing in order_________________? Read More »
Dental Materials, Medical Mcqs, Metallurgy 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