Which of the following zones is used for melting alloy during casting______________?

Related Mcqs:

1. Which of the following statements about high copper silver alloy compared to conventional alloy is not true ?

   A. It has increased tensile and compressive strength
   B. It has poor tarnish and corrosion resistance
   C. It’s edge strength is greater
   D. Mercury content in the final restoration is less

2. The plexus of Rashkov is present in which of the following zones in pulp ?

   A. Cell free zone
   B. Cell rich zone
   C. Odontoblastic zone
   D. Pulp core

3. The red zones of lips have_____________?

   A. 30% Sebaceous glands
   B. 75% sebaceous glands
   C. very small number of sebaceous glands, if any
   D. Absolutely no sebaceous glands

4. The number of dentinal zones in dentinal caries is_____________?

   A. One
   B. Two
   C. Four
   D. Five

5. The corrct order of microscopic zones of dentinal caries starting from the D.E junction is_______________?

   A. Zone of sclerosis, decalcification zone, bacterial invasion
   B. Bacterial invasion, decalcification zone, zone of sclerosis
   C. Zone of sclerosis, backterial invasion, decalcification zone
   D. Decalcification zone, zone of scierosis, backterial invasion

6. A neuralgia with trigger zones in the oropharynx and pain in the ear pharynx, nasopharynx, tonsils and posterior tongue is most likely_______________?

   A. Trigeminal neuralgia
   B. Bell’s palsy
   C. Glossopharyngeal neuralgia
   D. Sphenopalatine neuralgia

7. 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

8. The melting point of titanium is __________ degree celsius?

   A. 1056
   B. 1560
   C. 1668
   D. 1886

9. The melting point of silver is_____________?

   A. 1063° centigrade
   B. 960° Centigrade
   C. 850° Centrigrade
   D. 1123° Centrigrade

10. Which of the following constituents of amalgam alloy decreases expansion____________?

    A. Copper
    B. Zinc
    C. Silver
    D. Tin