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.
| 201. |
The main ingredient of inlay wax is__________________? |
| A. | Candellila wax |
| B. | Paraffin wax |
| C. | Carnauba wax |
| D. | Gum dammar |
| Answer» C. Carnauba wax | |
| 202. |
The main ingredient in dental plaster in_______________? |
| A. | Calcium sulphate hemihydrate |
| B. | Calcium phosphate |
| C. | Calcium anhydrate |
| D. | Calcium sulphate dihydrate |
| Answer» B. Calcium phosphate | |
| 203. |
The main form of iron carbide found in 18-8 steel________________? |
| A. | Martensite |
| B. | Ferrite |
| C. | Austenite |
| D. | Pearlite |
| Answer» D. Pearlite | |
| 204. |
The main difference between dental stone and dental plaster is______________? |
| A. | Chemical composition |
| B. | Self life |
| C. | Sharpe and size of particles |
| D. | Solubility in water |
| Answer» D. Solubility in water | |
| 205. |
The main components is sillicophosphate cement________________? |
| A. | Zinc phosphate and GIC |
| B. | Silicate and GIC |
| C. | ZOE and Silicate |
| D. | Zinc phosphate and SIlicate |
| Answer» E. | |
| 206. |
The main advantage of composites over unfilled direct filling resin is their_____________? |
| A. | Higher solubility in saliva |
| B. | Lower modulus of elasticity |
| C. | Esthetic excellence |
| D. | Lower thermal co-efficient of expansion |
| Answer» E. | |
| 207. |
The logical explanation for the unique anticariogenic property of most silicate cements is______________? |
| A. | The reduction in enamel solubility due to fluoride uptake by enamel |
| B. | That beryllium flux is used in silicates |
| C. | That silicates show very little leakage at the margins of the restoration |
| D. | Due to the high silica content |
| Answer» B. That beryllium flux is used in silicates | |
| 208. |
The linear solidification shrinkage of Type IV Ni-Cr based alloys is_______________? |
| A. | 2.3% |
| B. | 1.56% |
| C. | 1.37% |
| D. | 3% |
| Answer» B. 1.56% | |
| 209. |
The latest method of curing denture base resins______________? |
| A. | Heat |
| B. | Visible light |
| C. | Chemicals |
| D. | Lasers |
| Answer» C. Chemicals | |
| 210. |
The largest component of amalgam alloy is_____________? |
| A. | Silver |
| B. | Tin |
| C. | Zinc |
| D. | Copper |
| Answer» B. Tin | |
| 211. |
The Knoop Hardness Number of Microfilled composite Restorative material ranges from____________? |
| A. | 50 – 60 KHN |
| B. | 25 – 35 KHN |
| C. | 15 – 20 KHN |
| D. | 40 – 48 KHN |
| Answer» C. 15 – 20 KHN | |
| 212. |
The inlay wax most commonly used for direct technique_____________________? |
| A. | Type 1 |
| B. | Type 2 |
| C. | Type 3 |
| D. | Type 4 |
| Answer» B. Type 2 | |
| 213. |
The impression materials with lowest viscosity is_____________? |
| A. | Plaster of paris |
| B. | Agar – agar |
| C. | Zinc oxide eugenol |
| D. | Elastomers |
| Answer» B. Agar – agar | |
| 214. |
The impression with the least dimensional change upon disinfection is_______________? |
| A. | Addition poly silicone |
| B. | Agar-agar |
| C. | Polysulphide |
| D. | Polyether |
| Answer» B. Agar-agar | |
| 215. |
The impression material used to record the prepared areas on abutment teeth is______________? |
| A. | High viscosity elastomeric impression material |
| B. | Medium viscosity elastomeric impression material |
| C. | Low viscosity elastomeric impression material |
| D. | None of the above |
| Answer» D. None of the above | |
| 216. |
The impression for a diagnostic cast of a partial edentulous mouth should be taken in_______________? |
| A. | Impression wax |
| B. | Modelling compound |
| C. | Hydro-colloid |
| D. | Hydro cal |
| Answer» D. Hydro cal | |
| 217. |
The imperfection seen on the lingual flange of a lower denture caused by rapid heating during a curing cycle is called_____________? |
| A. | Localised Shrinkage porosity |
| B. | Gas inclusion porosity |
| C. | Micro porosity |
| D. | Surface porosity |
| Answer» D. Surface porosity | |
| 218. |
The ideal temperature of water bath for softening fluid wax is about________________? |
| A. | 51 to 54 degree F |
| B. | 51 to 54 degree C |
| C. | 70 to 75 degree F |
| D. | 70 to 75 degree C |
| Answer» C. 70 to 75 degree F | |
| 219. |
The hygroscopic technique is associated with______________? |
| A. | Investment |
| B. | Hydrocolloids |
| C. | Amalgam |
| D. | Silicate |
| Answer» B. Hydrocolloids | |
| 220. |
The highest mercury concentration in amalgam filling is found_____________? |
| A. | At the margin of the restoration |
| B. | In the centre of the restoration |
| C. | In the deepest part of the restoration |
| D. | None of the above |
| Answer» B. In the centre of the restoration | |
| 221. |
The higher the Hg alloy ratio in dental amalgam________________? |
| A. | Higher the strength |
| B. | Lower the creep value |
| C. | More matrix matrial formed |
| D. | More gamma 1 phase formed |
| Answer» D. More gamma 1 phase formed | |
| 222. |
The greatest stress which may be produced in a material such that stress is directly proportional to the strain is know as_____________? |
| A. | The elastic limit |
| B. | The proportional limit |
| C. | The yield strength |
| D. | Modulus of elasticity |
| Answer» C. The yield strength | |
| 223. |
The gold alloys used for casting contain at least…. percent of precious metal according to ADA specification number 5________________? |
| A. | 55 |
| B. | 65 |
| C. | 75 |
| D. | 85 |
| Answer» D. 85 | |
| 224. |
The function of the coupling agent in a restorative resin is to allow______________? |
| A. | Adhesion of resin particles |
| B. | Bonding between filler crystals |
| C. | Bonding between filler and resin |
| D. | Bonding between tooth and resin |
| Answer» E. | |
| 225. |
The function of a sprue is to_______________? |
| A. | Form an opening of molten metal to enter the mold |
| B. | Help polish cast restorations |
| C. | Eliminate air bubbles on the wax pattern |
| D. | Reproduce fine detail |
| Answer» B. Help polish cast restorations | |
| 226. |
The function of 2% potassium sulphate in a gypsum product is_____________? |
| A. | To regulate the setting expansion |
| B. | Regulate setting time |
| C. | Acts as retarder |
| D. | None |
| Answer» C. Acts as retarder | |
| 227. |
The forces that hold atoms together are called_____________? |
| A. | Primary forces |
| B. | Secondary forces |
| C. | Cohesive forces |
| D. | Ionic forces |
| Answer» D. Ionic forces | |
| 228. |
The first porcelain tooth material was introduced by______________? |
| A. | DeChemant |
| B. | Ash |
| C. | Plateau |
| D. | McClean |
| Answer» B. Ash | |
| 229. |
The elastic of plastic deformation to fracture a material is its_______________? |
| A. | Toughness |
| B. | Brittleness |
| C. | Young’s modulus |
| D. | Proportional limit |
| Answer» B. Brittleness | |
| 230. |
The effects associated with cold working can be eliminated by a heat treatment called______________? |
| A. | Age hardening heat treatment |
| B. | Annealing heat treatment |
| C. | Homogenization heat treatment |
| D. | Solution heat treatment |
| Answer» C. Homogenization heat treatment | |
| 231. |
The effect of zinc oxide-eugenol on the pulp ? |
| A. | Is irritating |
| B. | Encourages pulpal fibrosis |
| C. | Is sedating |
| D. | Has no effect |
| Answer» D. Has no effect | |
| 232. |
The effect of trituration on strength in an amalgam restoration depends on______________? |
| A. | Amalgam alloy |
| B. | Trituration time |
| C. | Speed of amalgamator |
| D. | All of the above |
| Answer» E. | |
| 233. |
The dual cure cements should not be used with light transmitting prostheses thicker than____________? |
| A. | mm |
| B. | 1.5 mm |
| C. | mm |
| D. | 2.5 mm |
| Answer» E. | |
| 234. |
The deoxidizing agent added to dental alloys is______________? |
| A. | Palladium |
| B. | Silver |
| C. | Copper |
| D. | Zinc |
| Answer» E. | |
| 235. |
The dental amalgam is most resistant to________________? |
| A. | Compressive stress |
| B. | Impact stress |
| C. | Shear stress |
| D. | Tensile stress |
| Answer» B. Impact stress | |
| 236. |
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 |
| Answer» E. | |
| 237. |
The contraction of gold alloy on solidifying is approximately_____________? |
| A. | 0.4% |
| B. | 1.4% |
| C. | 2.4% |
| D. | 3.4% |
| Answer» C. 2.4% | |
| 238. |
The component in very minor quantity in stainless steel that changes the properties to a maximum level is____________? |
| A. | Carbon |
| B. | Molybdenum |
| C. | Chromium |
| D. | Nickel |
| Answer» B. Molybdenum | |
| 239. |
The commonly used laser for curing composite resin is______________? |
| A. | Nd:YAG |
| B. | CO2 |
| C. | ER:YAG |
| D. | Argon |
| Answer» E. | |
| 240. |
The cohesive gold used as bulk filler is_____________? |
| A. | Electra alloy |
| B. | Mat gold |
| C. | Spherical gold |
| D. | Gold foll |
| Answer» C. Spherical gold | |
| 241. |
The chief advantage of zinc phosphate cement is its___________? |
| A. | Good compressive strength |
| B. | Film thickness |
| C. | Lack of irritation |
| D. | Low solubility |
| Answer» C. Lack of irritation | |
| 242. |
The chemical used to etch enamel is_______________? |
| A. | Zinc oxide |
| B. | Methyl methacrylate |
| C. | Phosphoric acid |
| D. | Eugenol |
| Answer» D. Eugenol | |
| 243. |
The cement Which is least soluble in oral cavity______________? |
| A. | Glass ionomer |
| B. | Resin cement |
| C. | Polycarboxylate cement |
| D. | Silico-Phosphate cement |
| Answer» C. Polycarboxylate cement | |
| 244. |
The cavity varnish applied reduces post operative sensitivity in amalgam restoration by____________? |
| A. | Decreasing conduction of heat to pulp |
| B. | Minimize marginal leakage around restoration |
| C. | By altering the chemical composition of restoration materials |
| D. | By preventing penetration of corrosion products into the dentinal tubules |
| Answer» C. By altering the chemical composition of restoration materials | |
| 245. |
The castability of chromium-cobait base metal alloys when compared to gold based noble metal alloys is_______________? |
| A. | More |
| B. | Less |
| C. | Equal |
| D. | Depends on the alloy type |
| Answer» C. Equal | |
| 246. |
The carat for Au foil used for restorations is_______________? |
| A. | 18 |
| B. | 20 |
| C. | 22 |
| D. | 24 |
| Answer» E. | |
| 247. |
The best way to remove a hydrocolloid impression from the patient’s mouth is____________? |
| A. | Slight rocking of the impression to disengage it from the undercut |
| B. | Wetting the periphery of the impression with moist cotton to break the peripheral seal |
| C. | Sudden jerking of the impression to prevent tearing |
| D. | Supporting the impression along with the tray to prevent disengaging of the tray alone |
| Answer» D. Supporting the impression along with the tray to prevent disengaging of the tray alone | |
| 248. |
The best tissue tolerated material for crown and bridge_______________? |
| A. | Highly polished porcelain |
| B. | Highly polished acrylic |
| C. | Highly glazed porcelain |
| D. | Highly polished metal |
| Answer» D. Highly polished metal | |
| 249. |
The best pickling solution for gypsum bonded investment is_______________? |
| A. | Hydrochloric acid |
| B. | Nitric acid |
| C. | Sulphuric acid |
| D. | Phosphoric acid |
| Answer» B. Nitric acid | |
| 250. |
The best fuel gas when used with oxygen is______________? |
| A. | Hydrogen |
| B. | Natural gas |
| C. | Propane |
| D. | Acetylene |
| Answer» D. Acetylene | |