Metallurgy

A. It prevents the formation of copper oxide
B. It prevents the formation of chromium oxide or dissolves chromic oxide layer
C. It prevents the flow of material in undesirable area
D. Increase the strength of solder

A. N 25%
B. 25%
C. >40%
D. 0%

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

A. Prevent the oxidation of the metal during melting
B. increase the melting point of the flux
C. Flaring the point of the sprue attachment
D. None of the above

A. Candellila wax
B. Paraffin wax
C. Carnauba wax
D. Gum dammar

A. William H Taggart
B. Buonocore
C. G.V. Black
D. Bowen

A. Rapid solidification of metal
B. No place for reservoirs
C. Incomplete evacuation of gases
D. Difficulty in removing casting from investment

A. 18% Nickel 8% Chrominum
B. 18% Chromium 8% Nickel
C. 18% Chromium 8% Cobalt
D. 18% Carbon 8% Iron

A. Temporarily cement inlays:
B. Make inlay wax patterns
C. Invest inlay patterns
D. Box models

A. Strength
B. Expansion components for casting shrinkage
C. Decrease strength
D. Contraction