MCQOPTIONS
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MCQOPTIONS
This section includes 587 Mcqs, each offering curated multiple-choice questions to sharpen your Medical Subjects knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
What is the working time of zinc polyacrylate cement ? |
| A. | 1 Minutes |
| B. | 2 Minutes |
| C. | 3 Minutes |
| D. | 4 Minutes |
| Answer» D. 4 Minutes | |
| 102. |
What is the recommended for condensation of dental amalgam ? |
| A. | 35 pounds |
| B. | 3 pounds |
| C. | 15 lb |
| D. | 25 lb |
| Answer» C. 15 lb | |
| 103. |
What is the polymerization shrinkage if 3:1 powder: liquid ratio is used____________? |
| A. | 6% |
| B. | 8% |
| C. | 10% |
| D. | 21% |
| Answer» B. 8% | |
| 104. |
What is the most frequently used restorative material ? |
| A. | Silicate |
| B. | Amalgam |
| C. | Composite |
| D. | Gold |
| Answer» C. Composite | |
| 105. |
What is the minimum thickness of the elastomeric impression material for an accurate impression_______________? |
| A. | 2 mm |
| B. | 2-4 mm |
| C. | Greater than 3 mm |
| D. | Maximum in the area of operation |
| Answer» E. | |
| 106. |
What is the disadvantage of using composites as restorative material ? |
| A. | Increased thermal conductivity |
| B. | Decreased wear resistance |
| C. | Decreased thermal conductivity |
| D. | None of the above |
| Answer» C. Decreased thermal conductivity | |
| 107. |
What is common in amalgam and ceramics ? |
| A. | More compressive strength but less tensile strength |
| B. | More compressive strength and tensile strength |
| C. | Less compressive strength but more tensile strength |
| D. | Less compressive strength and tensile strength |
| Answer» C. Less compressive strength but more tensile strength | |
| 108. |
What fraction of inhaled mercury vapors retained in the body ? |
| A. | 45-55% |
| B. | 55-65% |
| C. | 65-85% |
| D. | More than 85% |
| Answer» D. More than 85% | |
| 109. |
Well premeasured capsules of amalgam can release mercury vapour during_______________? |
| A. | Mulling |
| B. | Carving |
| C. | Condensation |
| D. | Trituration |
| Answer» D. Trituration | |
| 110. |
Waxes are used for_______________? |
| A. | Primary impression |
| B. | Corrective impressions |
| C. | Impression of single tooth |
| D. | None of the above |
| Answer» C. Impression of single tooth | |
| 111. |
Wax pattern is ideally invested immediately to decrease the dimensional changes caused by_______________? |
| A. | Decrease flow |
| B. | Continuous expansion |
| C. | Relaxation of the internal stresses |
| D. | Water loss |
| Answer» D. Water loss | |
| 112. |
Water of reaction needed to react completely with 100 g of calcium sulphate hemihydrates to convert it to calcium sulphate dihydrate______________? |
| A. | 18.6ml |
| B. | 22.2ml |
| C. | 30.4ml |
| D. | 45.3ml |
| Answer» B. 22.2ml | |
| 113. |
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 |
| Answer» B. 0.6 and 0.28 | |
| 114. |
Wash or corrective impression is done by______________? |
| A. | Impression plaster |
| B. | Impression paste |
| C. | Alginate |
| D. | Rubber base impression material |
| Answer» C. Alginate | |
| 115. |
Vulcanization refers to the setting of__________________? |
| A. | Reversible hydrocolloid |
| B. | Mercaptan impression material |
| C. | Zinc Phosphate cement |
| D. | Zinc oxide-eugenol |
| Answer» C. Zinc Phosphate cement | |
| 116. |
VLC resins are also called as______________? |
| A. | Microwave-activated resins |
| B. | Tertiary amine-activated resins |
| C. | Light activated resins |
| D. | Heat activated resins |
| Answer» D. Heat activated resins | |
| 117. |
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 |
| Answer» C. Retarding the polymerization reaction | |
| 118. |
Ultimate tensile strength refers to_________________? |
| A. | Stress before rupture |
| B. | Stress after rupture |
| C. | Longitudinal compressive strength |
| D. | Horizontal compressive strength |
| Answer» B. Stress after rupture | |
| 119. |
Type III Dental gypsum is__________________? |
| A. | Class II stone |
| B. | Densite |
| C. | Class I stone or hydrocal |
| D. | Model or lab plaster |
| Answer» D. Model or lab plaster | |
| 120. |
Type I gypsum product is also called_______________? |
| A. | Impression plaster |
| B. | Class I stone / Hydrocal |
| C. | Class II stone/Densite |
| D. | Model plaster |
| Answer» B. Class I stone / Hydrocal | |
| 121. |
Type I and Type II zinc oxide impression paste differ with respect to_______________? |
| A. | Their use |
| B. | Their hardness after setting |
| C. | Water content |
| D. | Eugenol content |
| Answer» C. Water content | |
| 122. |
Two in one stage impression materials include______________? |
| A. | Zinc Oxide eugenol impression paste |
| B. | Hydrocolloid impression material |
| C. | Elastomeric impression material |
| D. | All of the above |
| Answer» D. All of the above | |
| 123. |
Tublulence of molten gold is due to _____________? |
| A. | Impurities in gold |
| B. | Improper venting |
| C. | A and B |
| D. | None of the above |
| Answer» E. | |
| 124. |
Trisodium phosphate in alginate acts are_______________? |
| A. | Retarder |
| B. | Reactor |
| C. | Accelerator |
| D. | Plasticizer |
| Answer» B. Reactor | |
| 125. |
Trisodium phosphate added to alginate contributes towards_______________? |
| A. | increasing the working time of alginate impression material |
| B. | Acts as an accelerator |
| C. | Initiating the setting reaction |
| D. | Provides gel strength |
| Answer» B. Acts as an accelerator | |
| 126. |
Torsional force is_______________? |
| A. | Compression |
| B. | Tensile force |
| C. | Shear |
| D. | Transverse bending force |
| Answer» D. Transverse bending force | |
| 127. |
To prevent porosity in self-cure acrylic resin, curing should be carried in______________? |
| A. | Cold water |
| B. | Hot water |
| C. | Under tap water |
| D. | Under vacuum pressure |
| Answer» E. | |
| 128. |
To prevent porosity in dental porcelain it should be backed________________? |
| A. | Boric oxide |
| B. | In vacuum |
| C. | For long period |
| D. | Under pressure |
| Answer» C. For long period | |
| 129. |
To make the vinyl Polysiloxane hydrophilic the following is added_______________? |
| A. | Mineral oil |
| B. | Surfactant |
| C. | Water |
| D. | Plasticizer |
| Answer» C. Water | |
| 130. |
To cure a heat cure resin, a proper heating cycle is necessary_____________? |
| A. | To prevent the porosity |
| B. | To prevent warpage |
| C. | To prevent volume expansion |
| D. | All of the above |
| Answer» B. To prevent warpage | |
| 131. |
Titanium casting is done_____________? |
| A. | Under vacuum in argon atmosphere |
| B. | Under air pressure in nitrogen atmosphere |
| C. | In specially fabricated aluminium vanadium |
| D. | Using CAD-CAM technique |
| Answer» B. Under air pressure in nitrogen atmosphere | |
| 132. |
Thickness of luting cement is_____________? |
| A. | 20-40μ |
| B. | 10-20μ |
| C. | 60-80μ |
| D. | 1-2μ |
| Answer» B. 10-20μ | |
| 133. |
Thermal conductivity of which material is close to dentin____________? |
| A. | Amalgam |
| B. | Silicate |
| C. | Composite resin |
| D. | Cavity varnish |
| Answer» C. Composite resin | |
| 134. |
The Zinc oxide-eugenol impression pastes harden by________________? |
| A. | Chemical reaction |
| B. | Cold |
| C. | Heat |
| D. | Pressure |
| Answer» B. Cold | |
| 135. |
The yield strength of AUstenite (NiTi alloy) is______________? |
| A. | 100 Mpa |
| B. | 240 Mpa |
| C. | 560 Mpa |
| D. | 700 Mpa |
| Answer» D. 700 Mpa | |
| 136. |
The wetting of an adherent surface by an adhesive is related to________________? |
| A. | Surface energy of the adherent |
| B. | Surface texture of the adherent |
| C. | Surface tension of the adherent |
| D. | Nature of the adherent that is crystalline or amorphous |
| Answer» B. Surface texture of the adherent | |
| 137. |
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 |
| Answer» D. 15 ml of water to 40 gms of powder | |
| 138. |
The type of spatula used to mix composite is________________? |
| A. | Plastic |
| B. | Stainless steel |
| C. | Iron |
| D. | None of the above |
| Answer» B. Stainless steel | |
| 139. |
The tow cements which hold with the tooth are_______________? |
| A. | GIC and polycarboxylate |
| B. | GIC and ZnPO4 |
| C. | ZnPO4 and silicate |
| D. | GIC and silicate |
| Answer» B. GIC and ZnPO4 | |
| 140. |
The threshold limit value of mercury exposures is_______________? |
| A. | mg / m3 |
| B. | 0.05 mg / m3 |
| C. | mg / m3 |
| D. | mg / m3 |
| Answer» C. mg / m3 | |
| 141. |
The term trituration means____________? |
| A. | Lysing amalgam alloy |
| B. | Mixing of amalgam alloy and mercury |
| C. | Removal of excess of mercury |
| D. | None of the above |
| Answer» C. Removal of excess of mercury | |
| 142. |
The term ordered hardening heat treatment used in which of the following dental alloys ? |
| A. | Gold-Copper |
| B. | Nickel-Chromium |
| C. | Nickel-Titanium |
| D. | Silver-Palladium |
| Answer» B. Nickel-Chromium | |
| 143. |
The term given to the phenomenon of moisture absorption by an alginate impression in________________? |
| A. | Imbibition |
| B. | Syneresis |
| C. | Hysteresis |
| D. | Gelation |
| Answer» B. Syneresis | |
| 144. |
The temperature (in °F) of the mixing slab for silicate cements should be_____________? |
| A. | 55 – 65 |
| B. | 65 – 75 |
| C. | 75 – 85 |
| D. | 85 – 95 |
| Answer» C. 75 – 85 | |
| 145. |
The tarnished layer of silver amalgam consists of________________? |
| A. | Sulphides of silver |
| B. | Oxides of tin |
| C. | Chlorides of tin |
| D. | All of the above |
| Answer» B. Oxides of tin | |
| 146. |
The strength of the gypsum specimen when the water in excess of that required for the hydrate of the hemihydrate is left in the specimen is called____________? |
| A. | Dry strength |
| B. | Green strength |
| C. | Water strength |
| D. | Compressive strength |
| Answer» C. Water strength | |
| 147. |
The strength of gypsum prouducts is generally expressed in terms of______________? |
| A. | Tensile strength |
| B. | Wet strength |
| C. | Green strength |
| D. | compressive strength |
| Answer» E. | |
| 148. |
The strength of a gypsum investment is dependent on_______________? |
| A. | Carbon content |
| B. | Silica content |
| C. | Gypsum |
| D. | Copper |
| Answer» D. Copper | |
| 149. |
The strain that occurs when a material is stressed to its proportional limit is______________? |
| A. | Resilience |
| B. | Maximum flexibility |
| C. | Toughness |
| D. | Elastic limit |
| Answer» C. Toughness | |
| 150. |
The stiffness of a dental gold alloy is determined by its________________? |
| A. | Proportional limit |
| B. | Modulus of elasticity |
| C. | Ultimate tensile strength |
| D. | Flow |
| Answer» C. Ultimate tensile strength | |