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.
| 301. |
pH of fully set zinc phosphate______________? |
| A. | 3-4 |
| B. | 4-5 |
| C. | 6-7 |
| D. | 7-8 |
| Answer» D. 7-8 | |
| 302. |
Perforated impression tray are used for_______________? |
| A. | Alginate |
| B. | Zinc oxide-eugenol |
| C. | Agar-agar |
| D. | Impression compound |
| Answer» B. Zinc oxide-eugenol | |
| 303. |
Percentage of zinc in ZOE cement is__________________? |
| A. | 60% |
| B. | 70% |
| C. | 80% |
| D. | 90% |
| Answer» C. 80% | |
| 304. |
Percentage of tin in low copper alloy is______________? |
| A. | 30-35% |
| B. | 26-28% |
| C. | 13-32% |
| D. | 22-30% |
| Answer» C. 13-32% | |
| 305. |
Percentage of gold in high noble alloy is______________? |
| A. | N 25% |
| B. | 25% |
| C. | >40% |
| D. | 0% |
| Answer» D. 0% | |
| 306. |
Passivating alloys are_______________? |
| A. | Cr, Al, Ti |
| B. | Cr, Mo, Ti |
| C. | Cr, Gold, Ti |
| D. | Cr, Fe, Ti |
| Answer» B. Cr, Mo, Ti | |
| 307. |
Palladium is added to polyvinyl siloxane to_____________? |
| A. | Act as a scavenger |
| B. | Helps as surfactant |
| C. | Acts as plasticizer |
| D. | Acts as a catalyst |
| Answer» B. Helps as surfactant | |
| 308. |
Palatal secretions affect the setting of all the impression materials except_______________? |
| A. | Silicone |
| B. | Agar-agar |
| C. | Impression paste |
| D. | Impression plaster |
| Answer» C. Impression paste | |
| 309. |
Over-trituration of silver alloy and mercury_______________? |
| A. | Reduces contraction |
| B. | Increases the strength of lathe cut alloy but reduces the strength of spherical alloy amalgam |
| C. | Decreases creep |
| D. | Gives al dull and crumbly amalgam |
| Answer» C. Decreases creep | |
| 310. |
Outstanding clinical performance of dental amalgam restoration is related to its____________? |
| A. | Compressive strength |
| B. | Tensile strength |
| C. | Corrosion |
| D. | Creep |
| Answer» B. Tensile strength | |
| 311. |
Opaque porcelain________________? |
| A. | Is Feldspathic glass |
| B. | Contains opacifier like zirconium and titanium oxide |
| C. | Not used to mask the colour of the cement used in placing of restoration |
| D. | Used to produce the characteristic translucence, which is an inherent aspect of the incisal edge in natural teeth |
| Answer» C. Not used to mask the colour of the cement used in placing of restoration | |
| 312. |
One of the most important advantages of truly elastic impression material would be its capacity for______________? |
| A. | Close adaptation to soft tissues |
| B. | With drawl without permanent distortion |
| C. | Reproduction of surface details |
| D. | Compatibility with gypsum products |
| Answer» C. Reproduction of surface details | |
| 313. |
One of the claims for the superiority composite resin restoration over silicate cement restorations is that the resin restorations_____________? |
| A. | Prevent galvanic action |
| B. | Are practically insoluble in oral fluids |
| C. | Adapt to the walls of the cavity better |
| D. | Have a higher coefficient of thermal expansion |
| Answer» C. Adapt to the walls of the cavity better | |
| 314. |
One bottle system of adhesive resins_____________? |
| A. | 4th generation bonding agents |
| B. | Separate etching step not required |
| C. | Separate etching step is still required |
| D. | Contains only primer |
| Answer» D. Contains only primer | |
| 315. |
Once triturated, the Dental amalgam should be condensed with in_____________? |
| A. | 5 minutes |
| B. | 6 minutes |
| C. | 3 minutes |
| D. | 15 minutes |
| Answer» D. 15 minutes | |
| 316. |
Non metal which conducts elactricity______________? |
| A. | Graphite |
| B. | Carbon |
| C. | Acrylic |
| D. | Porcelain |
| Answer» B. Carbon | |
| 317. |
No trail closure is necessary with which one of the technique during denture fabrication_____________? |
| A. | Compression moulding technique |
| B. | Injection moulding technique |
| C. | Fluid resin technique |
| D. | Light cured technique |
| Answer» C. Fluid resin technique | |
| 318. |
NiTi alloy have_______________? |
| A. | Shape memory |
| B. | Hyper rigidity |
| C. | Corrosion resistance |
| D. | Weldable properties |
| Answer» B. Hyper rigidity | |
| 319. |
Nickel-Titanium alloy has__________________? |
| A. | Unreliable spring back |
| B. | low spring back |
| C. | Minimal spring back |
| D. | None of the above |
| Answer» E. | |
| 320. |
Nickel is added to wrought gold alloys as______________? |
| A. | Strengtherner |
| B. | Hardener |
| C. | Whitens the alloy |
| D. | Scavenger |
| Answer» B. Hardener | |
| 321. |
Name the accelerator used in Zinc oxide eugenol paste______________? |
| A. | Olive oil |
| B. | Linseed oil |
| C. | Zinc acetate |
| D. | All of these |
| Answer» D. All of these | |
| 322. |
Munsell system is used to_________________? |
| A. | Define and measure colour qualitatively |
| B. | Define and measure physical properties of gold alloys |
| C. | Evaluate brittleness of different alloys |
| D. | Measures different colours quantitatively |
| Answer» E. | |
| 323. |
Mouth temperature waxes are_______________? |
| A. | Iowa wax |
| B. | Modeling wax |
| C. | Green stick wax |
| D. | None of the above |
| Answer» B. Modeling wax | |
| 324. |
Most rigid elastomer is___________________? |
| A. | Polyether |
| B. | Polysulphide |
| C. | Addition silicone |
| D. | Condensation silicone |
| Answer» B. Polysulphide | |
| 325. |
Most preferable cement for temporary restoration______________? |
| A. | GIC |
| B. | ZOE |
| C. | Ca (OH)2 |
| D. | Zinc polycarboxylate cement |
| Answer» C. Ca (OH)2 | |
| 326. |
Most mucostatic among the following_____________? |
| A. | Impression compound |
| B. | Alginate |
| C. | ZOE paste |
| D. | Elastomer |
| Answer» D. Elastomer | |
| 327. |
Most ideally elastic among the following_______________? |
| A. | Polyether |
| B. | Addition silicone |
| C. | Polysulphide |
| D. | Condensation silicone |
| Answer» C. Polysulphide | |
| 328. |
Most flexible impression material______________? |
| A. | Impression compound |
| B. | Impression paste |
| C. | Addition silicone |
| D. | Alginate |
| Answer» B. Impression paste | |
| 329. |
Most commonly used retarder in gypsum_____________? |
| A. | Na2 So4 |
| B. | Nacl |
| C. | Citrales |
| D. | K₂ So₄ |
| Answer» D. K₂ So₄ | |
| 330. |
Most biocompatible material in oral cavity is_______________? |
| A. | Platinium |
| B. | Palladium |
| C. | Titanium |
| D. | Gold |
| Answer» D. Gold | |
| 331. |
Most advantageous indication of acid etching is______________? |
| A. | Decrease micro leakage |
| B. | Decrease polymerization shrinkage |
| C. | Decrease coefficient of thermal expansion |
| D. | Decrease porosity in restorative material |
| Answer» B. Decrease polymerization shrinkage | |
| 332. |
Moisture contamination of amalgam can lead to_____________? |
| A. | Marginal breakdown |
| B. | Shrinkage |
| C. | Delayed expansion |
| D. | increased stresses |
| Answer» D. increased stresses | |
| 333. |
Modulus of elasticity means_______________? |
| A. | Rigidity or stiffness of the material |
| B. | Ability to be stretched with permanent deformation |
| C. | Ductility of a material |
| D. | Malleability of the metal |
| Answer» B. Ability to be stretched with permanent deformation | |
| 334. |
Modiffiers are added to gypsum mainly to_______________? |
| A. | Modify setting time |
| B. | Modify setting expansion |
| C. | Modify strength |
| D. | Decrease the porosity |
| Answer» B. Modify setting expansion | |
| 335. |
Modern dental noble metal casting alloys generally have equiaxed fine grain structures because of the incorporation of small amounts of______________? |
| A. | Chromium |
| B. | Indium |
| C. | Irridium |
| D. | Palladium |
| Answer» D. Palladium | |
| 336. |
Model plaster (white) used to cast study models before mixing with water, is largely composed of____________? |
| A. | CaO |
| B. | CaCO3 |
| C. | (CaSO4)2-½H2O |
| D. | CaSO4-2H2O |
| Answer» D. CaSO4-2H2O | |
| 337. |
Mode of failure during dislodgement of prosthesis cemented with zinc poly carboxylate cement is usually seen at the_____________? |
| A. | Cement tooth interface |
| B. | Cement prosthesis interface |
| C. | Cleavage through the cement layer |
| D. | Fracture of tooth or prosthesis |
| Answer» C. Cleavage through the cement layer | |
| 338. |
Minimum thickness for type I zinc phosphate cement should be_______________? |
| A. | 15 microns |
| B. | 25 microns |
| C. | 50 microns |
| D. | 100 microns |
| Answer» C. 50 microns | |
| 339. |
Minimum flow of Type-I impression compound at mouth temperature is___________________? |
| A. | 4% |
| B. | 6% |
| C. | 8% |
| D. | 10% |
| Answer» C. 8% | |
| 340. |
Microstructure of cobalt chromium alloy in cast condition is______________? |
| A. | Fibrous |
| B. | Homogeneous |
| C. | Inhomogenous |
| D. | amorphous |
| Answer» D. amorphous | |
| 341. |
Mercury rich condition in a slow setting amalgam alloy system in a resoration in______________? |
| A. | Accelerated corrosion |
| B. | Fracture of the restoration |
| C. | Merginal damage |
| D. | All of the above |
| Answer» E. | |
| 342. |
Mercury is toxic because it_____________? |
| A. | Complexes with hemoglobinto form methemoglobin |
| B. | Inhibits hemoglobin synthesis, producing anemia |
| C. | Inhibits anaerobic glycolysis |
| D. | Binds to sulfhydryl groups |
| Answer» E. | |
| 343. |
Mercury intoxication in dental office mainly results from____________? |
| A. | Direct contact with the mercury |
| B. | Inhalation of mercury vapours |
| C. | Ingestion of mercury |
| D. | None of the above |
| Answer» C. Ingestion of mercury | |
| 344. |
MEchanism of adhesion of GIC restoration with tooth surface is by mean of ______________? |
| A. | Carboxyl group |
| B. | Chelates with Metal Ions |
| C. | C=C double bond |
| D. | Polymer chains |
| Answer» B. Chelates with Metal Ions | |
| 345. |
Mechanical properties of Cp Titanium are similar to alloys_____________? |
| A. | Type III and Type IV gold |
| B. | Type V and type VI gold |
| C. | Type VII and type VIII gold |
| D. | None of the above |
| Answer» B. Type V and type VI gold | |
| 346. |
Maxwell – Voigt Model is to determine________________? |
| A. | Elastic Behaviour |
| B. | Plastic Behaviour |
| C. | Viscoelastic Behaviour |
| D. | All of the above |
| Answer» D. All of the above | |
| 347. |
Materials which has high compressive strength and low tensile strength is classified with property of________________? |
| A. | Ductility |
| B. | Brittleness |
| C. | Malleability |
| D. | Resilient |
| Answer» C. Malleability | |
| 348. |
Masterial causing minimum tissue distortion is______________? |
| A. | Polysulphide |
| B. | Silicone |
| C. | Impression plaster |
| D. | Zinc oxide eugenol paster |
| Answer» D. Zinc oxide eugenol paster | |
| 349. |
Marginal leakage related to temperature change occurs to the greatest extent with_______________? |
| A. | Amalgam alloy |
| B. | Unfilled resin |
| C. | Composite resin |
| D. | Direct filling gold |
| Answer» C. Composite resin | |
| 350. |
Macromolecules in Dental Resin is attached by______________? |
| A. | Covalent bonds |
| B. | sonic bonds |
| C. | Vander Wall’s Forces |
| D. | Hydrogen Bonds |
| Answer» B. sonic bonds | |