A. Transformation toughening
B. Dispersion of crystalline phase
C. Inducing residual compressive strength
D. All of the above
A. Boric oxide
B. In vacuum
C. For long period
D. Under pressure
A. High temperature during glazing
B. Low temperature during glazing
C. Improper condensation
D. High firing temperature
A. Rate of arriving at firing temperature
B. Uniformity of particle size
C. Shape and size of particle
D. Type of investment used
A. In open air
B. Under air compression
C. When several layer are fired simultaneously
D. Under minimum pressure
A. Thoroughness of condensation
B. Rapidity of firing
C. High firing temperature
D. All of the above
A. Feldspar
B. Kaolin
C. Quartz
D. Clay
A. Highly polished porcelain
B. Highly polished acrylic
C. Highly glazed porcelain
D. Highly polished metal
A. Rubber
B. Plastic
C. Organic substances
D. Glass
A. Colour matching
B. Transparency
C. Opacity
D. None of the above