Category: Metallurgy

A. Is applied to the walls of the investment to produce hygroscopic expansion
B. Increase the strength and the setting expansion of the phosphate-bonded investment
C. Acts as a retarder in the silica bonded investments
D. Acts as a refractory in the Silica bonded investments

A. Iowa wax
B. Modeling wax
C. Green stick wax
D. None of the above

A. Type 1
B. Type 2
C. Type 3
D. Type 4

A. Ease of construction of denture
B. Preserving the sulci
C. Ease of pouring an impression
D. All of the above

A. 0%
B. 2 to 3%
C. 5 to 10%
D. <1%

A. Type III and Type IV gold
B. Type V and type VI gold
C. Type VII and type VIII gold
D. None of the above

A. Platinum
B. Copper
C. Silver
D. Gold

A. Suckback porosity
B. Gas inclusion porosity
C. Localized shrinkage porosity
D. Microporosity

A. Propane
B. Acetylene
C. Natural gas
D. Hydrogen

A. Chromium carbide
B. Carbon carbide
C. Iron carbide
D. Nickel carbide