Question: Elastomers are_________________?

• 1. Alginate
• 2. Agar
• 3. Polyethers
• 4. Imp. Compound

Question: Tear strength for impression material is highest for__________?

• 1. Condensation silicone
• 2. Alginate
• 3. Polysulfide
• 4. Addition silicone

Question: Trisodium phosphate added to alginate contributes towards_______________?

• 1. increasing the working time of alginate impression material
• 2. Acts as an accelerator
• 3. Initiating the setting reaction
• 4. Provides gel strength

Question: Agar syringe material can be used with/as______________?

• 1. Agar
• 2. Alginate impression material
• 3. Both of the above
• 4. Primary impression

Question: Impression compound has which of the following characteristic property ?

• 1. Low thermal conductivity
• 2. High flow property
• 3. Degradation is presence of moisture
• 4. Remain distortion free up to 72 hrs. pouring can be safely delayed

Question: Heavy and light body impression materials are use with______________?

• 1. Mercaptan
• 2. Silicone
• 3. Reversible hydrocolloid
• 4. A and B

Question: Before pouring an elastic impression it is washed with slurry of water and stone to______________?

• 1. Increase gel strength
• 2. Prevent syneresis
• 3. Prevent distortion
• 4. Wash off saliva on impression

Question: The basic constituent of reversible hydrocolloid impression material is________________?

• 1. Agar
• 2. Alginic acid
• 3. Gelatin
• 4. alginate

Question: Sol – gel transformation is seen in________________?

• 1. Impression plaster
• 2. Hydrocolloids
• 3. Elastomer
• 4. Impression compound

Question: Setting time of ZOE is best controlled by______________?

• 1. Adding a drop of eugenol
• 2. Adding a drop of water
• 3. Cooling the glass slab
• 4. Altering ratio of two pastes