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
Related Mcqs:
- Denture acrylics contain cross-linking agents mainly to improve their_____________?
A. Internal color
B. Tissue compability
C. Surface hardness
D. Craze resistance - Cross linking in denture base resin is contributed by_____________?
A. Glycol dimetharylate
B. Benzoyl peroxide
C. N-para toluidine
D. Methyl methacrylate - The cross linking agent of polysulphide rubber base impression material is______________?
A. Aromatic sulfonate esters
B. Stannous octate
C. Platinum salt catalyst
D. Lead dioxide - The polymerization of self-curing resin takes faster in______________?
A. Cold water
B. Hot water
C. Under pressure
D. In vaccum - 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 - What is the polymerization shrinkage if 3:1 powder: liquid ratio is used____________?
A. 6%
B. 8%
C. 10%
D. 21% - A child presents with infective skin lesions of the leg. Culture was done which showed gram positive cocci in chains and haemolytic colonies. Which of the following tests will best identify the organism ?
A. Bile solubility
B. Optochin sensitivity
C. Bacitracin sensitivity
D. Cataslase positive - Both beta chains of haemoglobin are abnormal in_________________?
A. Heterozygous sickle cell trait
B. Thalassemia major
C. Homozygous sickle cell anemia
D. Megaloblastic anemia - Use of dimethyl-P-toluidine is indicated for_______________?
A. Thermal polymerization of acrylic
B. Chemical polymerization
C. Retarding the polymerization reaction
D. To inhibit the action of benzoyl peroxide - Which of the following is correct arrangement of impression material regarding linear contraction in ascending order ?
A. Addition silicone < polyether < polysulfide < condensation silicone
B. Addition silicone < polysulfide < Polyether < condensation silicone
C. condensation silicone < polyether < polysulfide < Addition silicone
D. condensation silicone < polysulfide < polyether < Addition silicone
