A. a titanium
B. B titanium
C. Chrome-cobalt-nickel
D. Nickel-titanium
Related Mcqs:
- Which one of the following impression materials is elastic, sets by a chemical reaction and is catalyzed by chloroplatinic acid_______________?
A. Condensation silicone
B. Polyether
C. Polysulfide
D. Poly vinyl siloxane - For dental amalgam, the elastic modulus and tensile strength is______________?
A. 40 Gpa and 60 – 100 Mpa
B. 21 Gpa and 27 – 55 Mpa
C. 350 Gpa and 10 – 120 Mpa
D. 360 Gpa and 125 – 130 Mpa - Before pouring an elastic impression it is washed with slurry of water and stone to______________?
A. Increase gel strength
B. Prevent syneresis
C. Prevent distortion
D. Wash off saliva on impression - One of the most important advantages of truly elastic impression material would be its capacity for______________?
A. Close adaptation to soft tissues
B. With drawl without permanent distortion
C. Reproduction of surface details
D. Compatibility with gypsum products - Most ideally elastic among the following_______________?
A. Polyether
B. Addition silicone
C. Polysulphide
D. Condensation silicone - The elastic of plastic deformation to fracture a material is its_______________?
A. Toughness
B. Brittleness
C. Young’s modulus
D. Proportional limit - Elastic cartilage is found in_________________?
A. Auditory tube
B. Nasal septum
C. Articular cartilage
D. Costal cartilage - All of the following statements about cast cobalt alloy are true EXCEPT_____________?
A. They have a modulus of elasticity twice that of gold alloys
B. They are more rigid than gold alloys
C. They have higher ductility than gold alloys
D. They have a lower proportional limit than gold alloys - Which one of the following elements is NOT added is small amount to be used as grain refiners ?
A. Iridium
B. Ruthinium
C. Indium
D. Platinum - Which of the following cast gold alloys is used for fabricating partial denture frameworks______________?
A. Type I – Soft
B. Type II – Hard
C. Type III – Hard
D. Type IV – Extra Hard
