What is the polymerization shrinkage if 3:1 powder: liquid ratio is used____________?

Related Mcqs:

1. About polymerization shrinkage of composite all are true, except______________?

   A. Polymerization shrinkage is greater if bonded surface area is lesser than unbounded surface area
   B. Polymerization shrinkage is high if within the enamel margins
   C. Acid etching and priming will decrease polymerization shrinkage
   D. Microleakage can occur because of polymerization shrinkage

2. Which of the following procedure is indicated to produce cross-linking in the polymerization of linear chains of acrylic_______________?

   A. Addition of grain refining agents
   B. Addition of difunctional monomers
   C. Increasing the amount of heat required for linear polymerization
   D. Incorporation of terminating agents

3. The polymerization of self-curing resin takes faster in______________?

   A. Cold water
   B. Hot water
   C. Under pressure
   D. In vaccum

4. Water powder ratio of dental stone and plaster is respectively_________________?

   A. 0.28 and 0.6
   B. 0.6 and 0.28
   C. 0.6 and 3.2
   D. 0.28 and 0.98

5. The water powder ratio of alginate is______________?

   A. 100 ml of water to 60 gms of powder
   B. 40 ml of water to 40 gms of powder
   C. 40 ml of water to 15 gms of powder
   D. 15 ml of water to 40 gms of powder

6. Along with polymerisation shrinkage, one of the major disadvantages of polymethyl methacrylate as denture base resin are its poor_____________?

   A. Biological properties
   B. Thermal properties
   C. Mechanical properties
   D. Esthetic properties

7. The restoration which shows percolation and shrinkage along the margins is_____________?

   A. Composites
   B. Unfilled resins
   C. Amalgam
   D. Polycarboxylate

8. The maximum shrinkage during firing proces in ceramic occurs in__________________?

   A. High Bisque stage
   B. Low Bisque stage
   C. Medium Bisque stage
   D. Fusion stage

9. The linear solidification shrinkage of Type IV Ni-Cr based alloys is_______________?

   A. 2.3%
   B. 1.56%
   C. 1.37%
   D. 3%

10. Localised shrinkage porosity is seen when there________________?

    A. Thin sprue
    B. No reservoir
    C. Investment heated strongly
    D. Inadequate air discharge