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.
| 351. |
Machineable glass ceramic is________________? |
| A. | Cerestore |
| B. | Decor MGC |
| C. | Infusium |
| D. | Leucite |
| Answer» C. Infusium | |
| 352. |
Localised shrinkage porosity is seen when there________________? |
| A. | Thin sprue |
| B. | No reservoir |
| C. | Investment heated strongly |
| D. | Inadequate air discharge |
| Answer» B. No reservoir | |
| 353. |
Liquids which become more rigid as the rate of deformation increases is termed as_____________? |
| A. | Thixotropic |
| B. | Pseudoplastic |
| C. | Dilatant |
| D. | Newton |
| Answer» D. Newton | |
| 354. |
Linear contraction of elostomeric impression with passage of time is highest in______________? |
| A. | Addition silicone |
| B. | Polysulphide |
| C. | Polyetner |
| D. | Condensation silicone |
| Answer» E. | |
| 355. |
Linear coefficient of thermal expansion of metal used for metal caramic restoration range from________________? |
| A. | 11.5-12.5×10-6/°C |
| B. | 10.5-11.5×10-6/°C |
| C. | 13.5-14.5×10-6/°C |
| D. | 16.5-17.5×10-6/°C |
| Answer» D. 16.5-17.5×10-6/°C | |
| 356. |
Light cure system, side effect is____________? |
| A. | Iritis |
| B. | Cataract |
| C. | Conjunctivitis |
| D. | Retinal damage |
| Answer» E. | |
| 357. |
Lenolin is added is ZOE paste to______________? |
| A. | Decrease flow |
| B. | Increase flow |
| C. | Accelerate reaction |
| D. | Decrease irritation due to eugenol |
| Answer» C. Accelerate reaction | |
| 358. |
KHN of enamel is close to______________? |
| A. | Pure gold |
| B. | Amalgam |
| C. | Prcelain |
| D. | Composite |
| Answer» D. Composite | |
| 359. |
KHN value of Amalgam is_________________? |
| A. | 90 |
| B. | 343 |
| C. | 67 |
| D. | 450 |
| Answer» B. 343 | |
| 360. |
K2SO4 in agar-agar is for_______________? |
| A. | Accelerating the setting stage of gypsum |
| B. | Increase strength |
| C. | Give dimensional stability |
| D. | None of the above |
| Answer» B. Increase strength | |
| 361. |
Investment material used for cobalt-chromium alloys is_____________? |
| A. | Gypsum bonded |
| B. | Phosphate bonded |
| C. | Silica bonded |
| D. | None of the above |
| Answer» C. Silica bonded | |
| 362. |
Insufficient closure of the flasks during packing of denture base resin can result in_____________? |
| A. | Poor colour stability |
| B. | Less polymerization shrinkage |
| C. | Increase in vertical dimension |
| D. | Decrease in vertical dimension |
| Answer» D. Decrease in vertical dimension | |
| 363. |
Inorganic phase of the composites aid in_______________? |
| A. | Increasing the mechanical strength |
| B. | Decreasing the coefficient of thermal expansion |
| C. | Reducing the polymerization shrinkage |
| D. | All of the above |
| Answer» E. | |
| 364. |
Inlay wax is used to_______________? |
| A. | Temporarily cement inlays: |
| B. | Make inlay wax patterns |
| C. | Invest inlay patterns |
| D. | Box models |
| Answer» C. Invest inlay patterns | |
| 365. |
Inelastic impression material is_____________? |
| A. | Impression compound |
| B. | Alginate |
| C. | Agar-agar |
| D. | Polyether |
| Answer» B. Alginate | |
| 366. |
Indium in metal alloys_______________? |
| A. | Improve bonding |
| B. | Harden the metal ceramic Ag-Pd alloy |
| C. | Both A and B |
| D. | None of the above |
| Answer» D. None of the above | |
| 367. |
Increased amount of powder in zinc phosphate cement mixture will cause_______________? |
| A. | Decreased strength |
| B. | Decreased film thickness |
| C. | Decreased solubility |
| D. | Increased setting time |
| Answer» D. Increased setting time | |
| 368. |
Increase in the residual mercury in silver amalgam filling can_____________? |
| A. | Cause fracture of the filling |
| B. | Tarnish and corrosion |
| C. | Increase the strength |
| D. | Decrease condensation pressure |
| Answer» B. Tarnish and corrosion | |
| 369. |
Incomplete casting is the result of_____________? |
| A. | More porous investment in the mould |
| B. | Narrow sprue diameter |
| C. | Hollow sprue pin |
| D. | Large reservoir |
| Answer» C. Hollow sprue pin | |
| 370. |
Inadequate pressure application during flasking_______________? |
| A. | Increases vertical dimension |
| B. | Causes teeth to be shrunken in investment |
| C. | Causes poor quality of colour |
| D. | Causes fracture of denture |
| Answer» B. Causes teeth to be shrunken in investment | |
| 371. |
In type II gold alloys _______ Karat gold is used? |
| A. | 24 K |
| B. | 22 K |
| C. | 18 K |
| D. | 10 K |
| Answer» D. 10 K | |
| 372. |
In spherical alloys as compared to lathe cut____________? |
| A. | Less condensing force is required |
| B. | More condensing force is required |
| C. | Both require same condensing force |
| D. | Manipulation is easy |
| Answer» B. More condensing force is required | |
| 373. |
In self-cure acrylic resin, activator is_____________? |
| A. | Toluidine |
| B. | Quaternary ammonium compound |
| C. | Benzoyl peroxide |
| D. | Tertiary amine |
| Answer» E. | |
| 374. |
In reversible hydrocolloid the property by which the transformation from sol to gel and gel to sol is a function of the_____________? |
| A. | Concentration of filler and plasticizer |
| B. | Percentage composition by weight of water |
| C. | Concentration of potassium sulphate |
| D. | Temperature |
| Answer» E. | |
| 375. |
In processing methyl methacrylate, the resin may show porosity if the flask is placed too soon porosity most likely occur_____________? |
| A. | Throughout the denture |
| B. | Near the borders |
| C. | In the thickest part |
| D. | On the denture surface |
| Answer» D. On the denture surface | |
| 376. |
In porcelain metal elements are embedded in the matrix of________________? |
| A. | Rubber matrix |
| B. | Glass |
| C. | Plastic |
| D. | Resin matrix |
| Answer» C. Plastic | |
| 377. |
In plaster of paris the setting time is primarily altered by_________________? |
| A. | Altering P / L Ratio |
| B. | Altering temperature of mixing water |
| C. | Speed and length of hand spatulation |
| D. | Addition of accelerators and retarders |
| Answer» E. | |
| 378. |
In non zinc containing dental amalgam alloy the percentage of zinc present is______________? |
| A. | Less than 0.02% |
| B. | Less than 0.1% |
| C. | Less than 0.01% |
| D. | None of the above |
| Answer» D. None of the above | |
| 379. |
In non-eugenol pastes the constituents are mixed in______________? |
| A. | Phosphoric Acid |
| B. | Ethyl alcohol |
| C. | Benzoic acid |
| D. | None of the above |
| Answer» D. None of the above | |
| 380. |
In method of firing: A shorter firing period at a higher temperature is considered better_______________? |
| A. | A large time period at a lower temperature is preferred |
| B. | A long firing period at a very high temperature is preferred |
| C. | A short firing period at a very low temperature is preferred |
| D. | none of these |
| Answer» C. A short firing period at a very low temperature is preferred | |
| 381. |
In measuring Vickers hardness no. Which of the following is used________________? |
| A. | Spherical indenter |
| B. | Steel ball indentation |
| C. | Rhomboid shaped indenter |
| D. | 136-degree diamond pyramid |
| Answer» E. | |
| 382. |
In heat cure denture base acrylic resins the monomer is___________? |
| A. | Methacrylate |
| B. | Ethylmethacrylate |
| C. | Methyl ethyl methacrylate |
| D. | Polymethylmethacrylate |
| Answer» B. Ethylmethacrylate | |
| 383. |
In Base metal alloys, Corrosion resistance occurs due to___________________? |
| A. | Passivity |
| B. | High Fusion Temperature |
| C. | High Molecular Weight |
| D. | Co-efficient of Thermal Expansion |
| Answer» B. High Fusion Temperature | |
| 384. |
In amalgam alloy which acts as oxygen scavenger_____________? |
| A. | Cu |
| B. | Zn |
| C. | Pd |
| D. | Ag |
| Answer» C. Pd | |
| 385. |
In a patient with allergy to costume jewelry, which of the following is contraindicated______________? |
| A. | High gold |
| B. | Low gold |
| C. | Palladium – Ag |
| D. | Ni – Cr |
| Answer» E. | |
| 386. |
In a metal ceramic crown for a FPD the function of tin, indium which are readily oxidized minor constituents is to________________? |
| A. | Improve bonding |
| B. | Decrease porosity |
| C. | They react with the porcelain opaque layer, which masks the metal |
| D. | Improves the thermal expansion between the metal and porcelain |
| Answer» B. Decrease porosity | |
| 387. |
In a high copper amalgam the phase, which is eliminated is_______________? |
| A. | Gamma 1 |
| B. | Gamma 2 |
| C. | Gamma 1 and 2 |
| D. | No phase is eliminated |
| Answer» C. Gamma 1 and 2 | |
| 388. |
Impurities in casting is removed by________________? |
| A. | Annealing |
| B. | Degassing |
| C. | Pickling |
| D. | Conditioning |
| Answer» D. Conditioning | |
| 389. |
Impression techniques are used for recording________________? |
| A. | Oral mucosal tissues |
| B. | Dental hard tissues |
| C. | Oral mucosal tissues and dental hard tissues |
| D. | None of the above |
| Answer» D. None of the above | |
| 390. |
Impression material that Do NOT harden by chemical reaction_______________? |
| A. | Zinc oxide eugenol |
| B. | Impression compound |
| C. | Alginate |
| D. | Plaster of paris |
| Answer» C. Alginate | |
| 391. |
Impression plaster is_____________? |
| A. | Less compressive than alginate |
| B. | More compressive than alginate |
| C. | As compressive as alginate |
| D. | More compressive than hydrocolloids |
| Answer» B. More compressive than alginate | |
| 392. |
Impression compound is characterized by all of the following except_______________? |
| A. | Warps at room temperature |
| B. | Is a thermoset material |
| C. | Shows increased flow when kneaded with water |
| D. | Low coefficient of thermal conductivity |
| Answer» C. Shows increased flow when kneaded with water | |
| 393. |
Impression plaster containing potato starch is called______________? |
| A. | Plaster of paris |
| B. | Soluble plaster |
| C. | Anti – expansion solution |
| D. | Die stones |
| Answer» C. Anti – expansion solution | |
| 394. |
Impression compound has which of the following characteristic property ? |
| A. | Low thermal conductivity |
| B. | High flow property |
| C. | Degradation is presence of moisture |
| D. | Remain distortion free up to 72 hrs. pouring can be safely delayed |
| Answer» B. High flow property | |
| 395. |
Impression compound base_____________? |
| A. | Low thermal conductivity |
| B. | Crystalline structure |
| C. | Formation of cross linkage with heating |
| D. | High fusion temperature |
| Answer» B. Crystalline structure | |
| 396. |
Immediate pouring of impressions is most critical in_____________? |
| A. | Condensation polysillicon |
| B. | Addition Polysilicon |
| C. | Polyether |
| D. | A and B |
| Answer» B. Addition Polysilicon | |
| 397. |
If resin is packed in sandy stage what will be seen in the processed denture ? |
| A. | Distortion |
| B. | Porosity |
| C. | Inhomogeneous colour |
| D. | Increased strength |
| Answer» C. Inhomogeneous colour | |
| 398. |
If curing occurs at temperature more than 100°C porosity results in which area of denture______________? |
| A. | Hard thick central area |
| B. | Thin Palatal area |
| C. | Thin area of flanges |
| D. | Porosity is uniformly distributed |
| Answer» B. Thin Palatal area | |
| 399. |
Ideal requirement of metal ceramic casting____________? |
| A. | Low fusing ceramic and high fusing alloys |
| B. | Matching of coefficients of thermal expansion of ceramics and alloy |
| C. | Bonding between ceramic and alloy |
| D. | All of the above |
| Answer» E. | |
| 400. |
Hysteresis in a hydrocolloid gel is______________? |
| A. | Moisture absorption |
| B. | Temperature lag between gelation and liquefaction temperature |
| C. | Phenomenon of conversion of gel into sol |
| D. | All of the above |
| Answer» C. Phenomenon of conversion of gel into sol | |