Option A: Tensile strength
Option B: Proportional limit
Option C: Ductility
Option D: Hardness
Correct Answer: Ductility ✔
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Option A: Form an opening of molten metal to enter the mold
Option B: Help polish cast restorations
Option C: Eliminate air bubbles on the wax pattern
Option D: Reproduce fine detail
Correct Answer: Form an opening of molten metal to enter the mold ✔
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Option A: Carbon
Option B: Chromium
Option C: Nickel
Option D: Titanium
Correct Answer: Titanium ✔
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Option A: 100 Mpa
Option B: 240 Mpa
Option C: 560 Mpa
Option D: 700 Mpa
Correct Answer: 560 Mpa ✔
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Option A: Dimensional change
Option B: Thermal conductivity
Option C: Warpage
Option D: Tarnish and corrosion
Correct Answer: Tarnish and corrosion ✔
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Option A: Impurities in gold
Option B: Improper venting
Option C: A and B
Option D: None of the above
Correct Answer: None of the above ✔
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In a patient with allergy to costume jewelry, which of the following is contraindicated__________?
Option A: High gold
Option B: Low gold
Option C: Palladium – Ag
Option D: Ni – Cr
Correct Answer: D. Ni – Cr ✔
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Option A: Improve bonding
Option B: Harden the metal ceramic Ag-Pd alloy
Option C: Both A and B
Option D: None of the above
Correct Answer: Both A and B ✔
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Option A: Iowa wax
Option B: Modeling wax
Option C: Green stick wax
Option D: None of the above
Correct Answer: Iowa wax ✔
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Option A: More porous investment in the mould
Option B: Narrow sprue diameter
Option C: Hollow sprue pin
Option D: Large reservoir
Correct Answer: Narrow sprue diameter ✔
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Option A: Shrinkage of alloy on cooling
Option B: Investment breakdown
Option C: Incomplete wax elimination
Option D: Incomplete gas elimination
Correct Answer: Incomplete wax elimination ✔
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Option A: 700°C
Option B: 1,300°C
Option C: 1,063°C
Option D: 900°C
Correct Answer: 700°C ✔
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Option A: 30% cobalt and 60% chrominum
Option B: 60% cobalt and 30% chrominum
Option C: 1% palladium
Option D: 20% gold
Correct Answer: 60% cobalt and 30% chrominum ✔
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Option A: Ti 6Al 4V
Option B: Ti 5Al 4V
Option C: Ti 5Al 5V
Option D: Ti 6Al 6V
Correct Answer: Ti 6Al 4V ✔
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Wax pattern is ideally invested immediately to decrease the dimensional changes caused by__________?
Option A: Decrease flow
Option B: Continuous expansion
Option C: Relaxation of the internal stresses
Option D: Water loss
Correct Answer: Relaxation of the internal stresses ✔
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Option A: 19%
Option B: 2%
Option C: 1.7%
Option D: 4%
Correct Answer: 1.7% ✔
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Option A: Remove the oxides formed on the gold alloy
Option B: Lower the melting point
Option C: Replace casting wax
Option D: Speed the burnout process
Correct Answer: Remove the oxides formed on the gold alloy ✔
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Option A: High quality iron
Option B: Chrome
Option C: Cobalt
Option D: Nickel
Correct Answer: Chrome ✔
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Option A: Ease of construction of denture
Option B: Preserving the sulci
Option C: Ease of pouring an impression
Option D: All of the above
Correct Answer: Ease of pouring an impression ✔
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Option A: ¼ inch
Option B: ½ inch
Option C: 3/8 inch
Option D: one inch
Correct Answer: ¼ inch ✔
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Option A: Decrease its strength and ability to be hardened
Option B: Decrease its tarnish resistance
Option C: Increase its fusion temperature
Option D: Redden the alloy
Correct Answer: Increase its fusion temperature ✔
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Option A: They have a modulus of elasticity twice that of gold alloys
Option B: They are more rigid than gold alloys
Option C: They have higher ductility than gold alloys
Option D: They have a lower proportional limit than gold alloys
Correct Answer: They have higher ductility than gold alloys ✔
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Option A: Solid
Option B: Liquid
Option C: Gas
Option D: Colloid
Correct Answer: Colloid ✔
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Option A: It should be rapidly displaced from the mouth
Option B: It may exhibit fluid exudates on the surface as a result of imbibition of water
Option C: It will take up water and expand if kept wet
Option D: It will shrink as a result of syneresis
Correct Answer: It may exhibit fluid exudates on the surface as a result of imbibition of water ✔
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Option A: Their use
Option B: Their hardness after setting
Option C: Water content
Option D: Eugenol content
Correct Answer: Their hardness after setting ✔
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The term given to the phenomenon of moisture absorption by an alginate impression in__________?
Option A: Imbibition
Option B: Syneresis
Option C: Hysteresis
Option D: Gelation
Correct Answer: Imbibition ✔
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Option A: Addition poly silicone
Option B: Agar-agar
Option C: Polysulphide
Option D: Polyether
Correct Answer: Addition poly silicone ✔
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Option A: Act as a scavenger
Option B: Helps as surfactant
Option C: Acts as plasticizer
Option D: Acts as a catalyst
Correct Answer: Act as a scavenger ✔
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Option A: Condensation polysillicon
Option B: Addition Polysilicon
Option C: Polyether
Option D: A and B
Correct Answer: Condensation polysillicon ✔
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Option A: High viscosity elastomeric impression material
Option B: Medium viscosity elastomeric impression material
Option C: Low viscosity elastomeric impression material
Option D: None of the above
Correct Answer: Low viscosity elastomeric impression material ✔
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Option A: Non-elastic impression material
Option B: Thermoplastic impression material
Option C: More mucostatic than ZOE
Option D: Less mucostatic than ZOE
Correct Answer: Less mucostatic than ZOE ✔
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Option A: High viscosity elastomer
Option B: Medium viscosity elastomer
Option C: Medium & low viscosity elastomer
Option D: Low viscosity elastomer
Correct Answer: Low viscosity elastomer ✔
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The impression for a diagnostic cast of a partial edentulous mouth should be taken in__________?
Option A: Impression wax
Option B: Modelling compound
Option C: Hydro-colloid
Option D: Hydro cal
Correct Answer: Hydro-colloid ✔
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Option A: Mechanical action of saliva
Option B: Physical change
Option C: Evolution
Option D: Chemical change
Correct Answer: Physical change ✔
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Option A: Irreversible hydrocolloid
Option B: Reversible hydrocolloid
Option C: Impression plaster
Option D: Metallic oxide paste
Correct Answer: Reversible hydrocolloid ✔
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Option A: Raising the temperature of water used for maxing
Option B: Using excess water for maxing
Option C: Lowering the temperature of water used for mixing
Option D: None of the above
Correct Answer: Raising the temperature of water used for maxing ✔
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Option A: Continue to polymerize
Option B: Become elastic
Option C: Show imbibition and syneresis
Option D: Show gelation
Correct Answer: Continue to polymerize ✔
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Option A: Thin mix of plaster of paris
Option B: Zinc oxide eugenol impression paste
Option C: Free flowing wax
Option D: Reversible hydrocolloids
Correct Answer: Thin mix of plaster of paris ✔
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Option A: Slight rocking of the impression to disengage it from the undercut
Option B: Wetting the periphery of the impression with moist cotton to break the peripheral seal
Option C: Sudden jerking of the impression to prevent tearing
Option D: Supporting the impression along with the tray to prevent disengaging of the tray alone
Correct Answer: Sudden jerking of the impression to prevent tearing ✔
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Option A: Silicone
Option B: Agar-agar
Option C: Impression paste
Option D: Impression plaster
Correct Answer: Agar-agar ✔
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Option A: Decrease flow
Option B: Increase flow
Option C: Accelerate reaction
Option D: Decrease irritation due to eugenol
Correct Answer: Increase flow ✔
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Option A: Bullock heart
Option B: Chemicals
Option C: Sea weed
Option D: Chick cells
Correct Answer: Sea weed ✔
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Option A: Alginate
Option B: Zinc oxide-eugenol
Option C: Agar-agar
Option D: Impression compound
Correct Answer: Alginate ✔
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Option A: Trisodium phosphate reacts with sodium alginate
Option B: Trisodium phosphate reacts with calcium sulphate
Option C: Colloidal changes to sol
Option D: Material in contact with soft tissues sets last
Correct Answer: Trisodium phosphate reacts with calcium sulphate ✔
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Option A: Accelerating the setting stage of gypsum
Option B: Increase strength
Option C: Give dimensional stability
Option D: None of the above
Correct Answer: Accelerating the setting stage of gypsum ✔
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Option A: Impression plaster
Option B: Impression paste
Option C: Alginate
Option D: Rubber base impression material
Correct Answer: Impression paste ✔
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Option A: polyether polymer
Option B: Colloidal silica
Option C: Glycol ether
Option D: Di-vinyl poly (dimethyl siloxane)
Correct Answer: Glycol ether ✔
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Option A: Concentration of filler and plasticizer
Option B: Percentage composition by weight of water
Option C: Concentration of potassium sulphate
Option D: Temperature
Correct Answer: Temperature ✔
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Option A: Sol
Option B: Gel
Option C: Hydrocolloid
Option D: Colloid
Correct Answer: Hydrocolloid ✔
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Option A: Hydrocolloids
Option B: Elastomers
Option C: Zinc oxide eugenol
Option D: Plaster of paris
Correct Answer: Hydrocolloids ✔
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Option A: Has dimensional stability
Option B: Does not adhere to tissues
Option C: Is easy manipulation
Option D: Does not require special trays
Correct Answer: Has dimensional stability ✔
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Option A: Remove excess impression material
Option B: Remove saliva
Option C: Hydrate the impression
Option D: Accelerate the setting
Correct Answer: Remove saliva ✔
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Option A: Impression plaster
Option B: Irreversible hydrocolloid
Option C: Reversible hydroollioid
Option D: None of the above
Correct Answer: Irreversible hydrocolloid ✔
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Option A: Impression plaster
Option B: Impression paste
Option C: Silicon impression material
Option D: None of the above
Correct Answer: None of the above ✔
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Option A: CaCl2
Option B: Zinc acetate
Option C: Alcohol
Option D: Glycerine
Correct Answer: Glycerine ✔
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Option A: Aromatic sulfonate esters
Option B: Stannous octate
Option C: Platinum salt catalyst
Option D: Lead dioxide
Correct Answer: Lead dioxide ✔
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Option A: Custom trays facilitate uniform contraction of impression material
Option B: Custom trays require less impression material
Option C: Stock trays may be short in the flange area
Option D: Impressions made n the custom trays are easier to remove from the mouth
Correct Answer: Impressions made n the custom trays are easier to remove from the mouth ✔
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Option A: Olive oil
Option B: Linseed oil
Option C: Zinc acetate
Option D: All of these
Correct Answer: Zinc acetate ✔
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Option A: Addition silicone
Option B: Polysulphide
Option C: Polyetner
Option D: Condensation silicone
Correct Answer: Condensation silicone ✔
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Option A: Liquefies between 71 – 100°C
Option B: Solidfies between 50 – 70°C
Option C: Facilitates fabrication of metal dyes
Option D: Cannot register fine surface details
Correct Answer: A. Liquefies between 71 – 100°C ✔
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Option A: Borax
Option B: Water
Option C: Sulfates
Option D: Carbonates
Correct Answer: Borax ✔
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Option A: 100 ml of water to 60 gms of powder
Option B: 40 ml of water to 40 gms of powder
Option C: 40 ml of water to 15 gms of powder
Option D: 15 ml of water to 40 gms of powder
Correct Answer: 40 ml of water to 15 gms of powder ✔
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Option A: Alginate
Option B: Agar
Option C: Elastome
Option D: Zno paste
Correct Answer: Elastome ✔
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Option A: 43.5°C
Option B: 39°C
Option C: 65°C
Option D: 100°C
Correct Answer: 39°C ✔
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Option A: Air incorporated during mixing
Option B: Improper application of pressure during impression making
Option C: Presence of excessive saliva in impression area
Option D: Due to improper ratio of polymer and monomer
Correct Answer: Due to improper ratio of polymer and monomer ✔
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Option A: Unpleasant odor and taste
Option B: Low accuracy
Option C: Least permanent deformation
Option D: Highest curing shrinkage
Correct Answer: Unpleasant odor and taste ✔
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Option A: Hysterisis
Option B: Imbibition
Option C: Recrytallisation
Option D: Syneresis
Correct Answer: Recrytallisation ✔
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Option A: Zinc oxide eugenol
Option B: Impression compound
Option C: Alginate
Option D: Plaster of paris
Correct Answer: Impression compound ✔
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Option A: Light body and putty used at the same time
Option B: Putty used first and light body used second
Option C: Light body first and putty later
Option D: None of the above
Correct Answer: Putty used first and light body used second ✔
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Option A: 2 mm
Option B: 2-4 mm
Option C: Greater than 3 mm
Option D: Maximum in the area of operation
Correct Answer: Maximum in the area of operation ✔
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Option A: Rockwell tester
Option B: Barcol indenter
Option C: Knoop pyramid
Option D: Shore durometer
Correct Answer: Shore durometer ✔
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Option A: Inadequate mixing
Option B: Air bubbles
Option C: Too rapid polymerization
Option D: Incomplete polymerization caused by premature removal from mouth
Correct Answer: Incomplete polymerization caused by premature removal from mouth ✔
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Option A: Polyether
Option B: Polysulphide
Option C: Addition silicone
Option D: Condensation silicone
Correct Answer: Polyether ✔
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Option A: Polyether
Option B: Addition silicone
Option C: Polysulphide
Option D: Condensation silicone
Correct Answer: Addition silicone ✔
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Option A: Condensation silicone
Option B: Polyether
Option C: Polysulfide
Option D: Poly vinyl siloxane
Correct Answer: Poly vinyl siloxane ✔
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Option A: After the start of appearing elastic properties of impression material
Option B: Just after the start of appearing elastic properties of impression material
Option C: Just before the start of appearing elastic properties of impression material
Option D: Loss of luster of impression material
Correct Answer: Just before the start of appearing elastic properties of impression material ✔
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Option A: Sodium alginate
Option B: Potassium alginate
Option C: Trisodium phosphate
Option D: Calcium alginate
Correct Answer: Calcium alginate ✔
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Option A: Reducing the diatomaceous earth
Option B: Adding heavy metal salts
Option C: Coating with dihydric alcohol
Option D: Altering the matrix
Correct Answer: Coating with dihydric alcohol ✔
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Option A: Zinc Oxide eugenol impression paste
Option B: Hydrocolloid impression material
Option C: Elastomeric impression material
Option D: All of the above
Correct Answer: Elastomeric impression material ✔
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Option A: Injecting technique
Option B: Laminate technique
Option C: Immersion technique
Option D: Tempering technique
Correct Answer: Laminate technique ✔
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Option A: Addition polysilicone
Option B: Condensation polysilicone
Option C: Polyether
Option D: Polysulfide
Correct Answer: Polysulfide ✔
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Option A: Improper application of pressure during impression making
Option B: Air incorporated during mixing
Option C: Too rapid polymerization
Option D: Presence of moisture in impression area
Correct Answer: Too rapid polymerization ✔
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Option A: Plaster of paris
Option B: Agar – agar
Option C: Zinc oxide eugenol
Option D: Elastomers
Correct Answer: Plaster of paris ✔
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Option A: Hydrocolloids, silicones, polyether, polysulfide
Option B: Silicones, hydrocolloids, polyether, polysulfide
Option C: Polysulfide, hydrocolloids, silicones, polyether
Option D: Hydrocolloids, polyether, silicones, polysulfide
Correct Answer: Hydrocolloids, silicones, polyether, polysulfide ✔
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Option A: Impression compound
Option B: Alginate
Option C: ZOE paste
Option D: Elastomer
Correct Answer: ZOE paste ✔
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Option A: Agar
Option B: Alginate
Option C: Elastomers
Option D: Impression compound
Correct Answer: Agar ✔
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Option A: Ethyl alcohol
Option B: Glycol
Option C: Acetate
Option D: Propanolol
Correct Answer: Ethyl alcohol ✔
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Option A: Zinc Sulphate & Zinc chloride
Option B: Zinc chloride & Eugenol
Option C: Zinc Sulphate & Eugenol
Option D: Glycerin
Correct Answer: Zinc Sulphate & Zinc chloride ✔
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Option A: Polysulphide > polyether > Condensation silicone > Addition silicone
Option B: polyether > Condensation silicone > Polysulphide > Addition silicone
Option C: Addition silicone > polyether > Polysulphide > Condensation silicone
Option D: Addition silicone> Condensation silicone > Polysulphide > polyether
Correct Answer: Addition silicone > polyether > Polysulphide > Condensation silicone ✔
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Option A: Syringe agar and chilled tray alginate
Option B: Syringe agar and tray agar
Option C: Syringe agar and impression compound
Option D: Chilled alginate and impression compound
Correct Answer: Syringe agar and chilled tray alginate ✔
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Option A: Impression compound
Option B: Impression paste
Option C: Addition silicone
Option D: Alginate
Correct Answer: Impression compound ✔
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Option A: Addition silicone < polyether < polysulfide < condensation silicone
Option B: Addition silicone < polysulfide < Polyether < condensation silicone
Option C: condensation silicone < polyether < polysulfide < Addition silicone
Option D: condensation silicone < polysulfide < polyether < Addition silicone
Correct Answer: Addition silicone < polyether < polysulfide < condensation silicone ✔
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Option A: After the start of appearing elastic properties of impression material
Option B: Just after the start of appearing elastic properties of impression material
Option C: The time for start of mixing till just before the start of appearing elastic properties of impression material
Option D: Loss of lusture of impression material
Correct Answer: The time for start of mixing till just before the start of appearing elastic properties of impression material ✔
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Option A: 2% Potassium sulfate
Option B: 0.2% Potassium sulfate
Option C: 2% sodium sulfate
Option D: 4% Potassium sulfate
Correct Answer: 2% Potassium sulfate ✔
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Which of the following is correct regarding chemical setting of condensation silicone__________?
Option A: Polymerization occurs with repeated elimination of small molecules
Option B: Polymerization occurs with elimination of single byproduct
Option C: By condensation of repeated molecules of monomers
Option D: Condensation does not occur at all
Correct Answer: Polymerization occurs with repeated elimination of small molecules ✔
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Option A: Using less water powder ratio
Option B: Storing the impression under water
Option C: Prolonged manipulation
Option D: Using humidor
Correct Answer: Using humidor ✔
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Option A: Mineral oil
Option B: Surfactant
Option C: Water
Option D: Plasticizer
Correct Answer: Surfactant ✔
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Option A: Retarder
Option B: Modifier
Option C: Plasticier
Option D: Accelerator
Correct Answer: Accelerator ✔
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Option A: Glycol
Option B: Glyecrol
Option C: Glutamic acid
Option D: alcohol
Correct Answer: Glyecrol ✔
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