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.
| 551. |
Agar is prepared from_______________________? |
| A. | Bullock heart |
| B. | Chemicals |
| C. | Sea weed |
| D. | Chick cells |
| Answer» D. Chick cells | |
| 552. |
Agar impression materials differ from alginate impression materials in that the former sets by_______________? |
| A. | Mechanical action of saliva |
| B. | Physical change |
| C. | Evolution |
| D. | Chemical change |
| Answer» C. Evolution | |
| 553. |
Ag-Cu eutectic alloy has a characteristic Property of that fusion temp of_____________? |
| A. | The resultant alloy is greater |
| B. | The resultant alloy is lesser |
| C. | The resultant alloy varies according to the content of Ag of Cu |
| D. | None of the above |
| Answer» C. The resultant alloy varies according to the content of Ag of Cu | |
| 554. |
Advantage of zinc phosphate over GIC is______________? |
| A. | High compressive strength |
| B. | Tensile strength |
| C. | High modulus of elasticity |
| D. | Diametral strength |
| Answer» D. Diametral strength | |
| 555. |
Advantage of zinc containing amalgam is_______________? |
| A. | Better handling property |
| B. | Dimensional Stability |
| C. | Resistance to creep |
| D. | Toxicity to pulp and dentin |
| Answer» B. Dimensional Stability | |
| 556. |
Advantage of titanium over other base metal alloys_______________? |
| A. | Low weight |
| B. | Low cost |
| C. | Low strength |
| D. | Low melting point |
| Answer» B. Low cost | |
| 557. |
Advantage of minimum mercury technique or Eames technique is all Except________________? |
| A. | High strength |
| B. | Sets quickly |
| C. | Needs no squeezing of excess mercury |
| D. | Greater plasticity and adapts well to cavity walls |
| Answer» E. | |
| 558. |
Admixed high copper alloy powder contains_________________? |
| A. | 9-20% copper |
| B. | 13-20% copper |
| C. | 9-30% copper |
| D. | 13-30% copper |
| Answer» B. 13-20% copper | |
| 559. |
Adequate mixing of mercury is indicated by_______________? |
| A. | Dry Mix |
| B. | Shiny Mix |
| C. | Short Mixing Time |
| D. | None of the above |
| Answer» C. Short Mixing Time | |
| 560. |
Addition of large amounts of platinum to a casting gold alloy will________________? |
| A. | Decrease its strength and ability to be hardened |
| B. | Decrease its tarnish resistance |
| C. | Increase its fusion temperature |
| D. | Redden the alloy |
| Answer» D. Redden the alloy | |
| 561. |
ADA specification number of gypsum products are described under____________? |
| A. | 1 |
| B. | 4 |
| C. | 12 |
| D. | 25 |
| Answer» E. | |
| 562. |
Acrylic resins are used for______________? |
| A. | Anterior restorations |
| B. | Temporary bridges |
| C. | Denture base |
| D. | All of the above |
| Answer» E. | |
| 563. |
Acrylic resins were first introduced as a denture base material in______________? |
| A. | 1925 |
| B. | 1937 |
| C. | 1951 |
| D. | 1956 |
| Answer» C. 1951 | |
| 564. |
Acrylic (cold cure)______________? |
| A. | Melts at 100°C |
| B. | Softens at 100°C |
| C. | Still requires heat for polymerization |
| D. | Produces heat during polymerization |
| Answer» E. | |
| 565. |
Acid-etching is done for_______________? |
| A. | 30 seconds |
| B. | 60 seconds |
| C. | 90 seconds |
| D. | 120 seconds |
| Answer» B. 60 seconds | |
| 566. |
According of ADA specification No or number 1, the minimum compressive strength for silver amalgam filling aftr one hour should be________________? |
| A. | 80 Mpa |
| B. | 140 Mpa |
| C. | 260 Mpa |
| D. | 510 Mpa |
| Answer» B. 140 Mpa | |
| 567. |
Accelerators and retarders are used with gypsum products mainly to control_______________? |
| A. | Setting time |
| B. | Setting expansion |
| C. | Hardness of the set product |
| D. | None of the above |
| Answer» B. Setting expansion | |
| 568. |
Absorption of mercury in the human body occurs least from_____________? |
| A. | Lungs |
| B. | Gastro-intestinal Track |
| C. | Skin |
| D. | Kidneys |
| Answer» E. | |
| 569. |
About zinc oxide eugenol all are true except_______________? |
| A. | ZnO is converted to Zn(OH)2 |
| B. | Reaction is autocatalytic |
| C. | Water is the byproduct of reaction |
| D. | Dehydrated ZnO reacts with dehydrated eugenol |
| Answer» E. | |
| 570. |
About polymerization shrinkage of composite all are true, except______________? |
| A. | Polymerization shrinkage is greater if bonded surface area is lesser than unbounded surface area |
| B. | Polymerization shrinkage is high if within the enamel margins |
| C. | Acid etching and priming will decrease polymerization shrinkage |
| D. | Microleakage can occur because of polymerization shrinkage |
| Answer» B. Polymerization shrinkage is high if within the enamel margins | |
| 571. |
Ability of an orthodontic wire to spring back to its original shape is evaluated by_____________? |
| A. | Brittleness |
| B. | Resilience |
| C. | Tensile strength |
| D. | Toughness |
| Answer» C. Tensile strength | |
| 572. |
A thinner mix of a gypsum bonded investment will_______________? |
| A. | Produce a smoother casting |
| B. | Decrease setting expansion |
| C. | Increase setting expansion |
| D. | Increase thermal expansion |
| Answer» C. Increase setting expansion | |
| 573. |
A technique of combining reversible and irreversible hydrocolloid that could bond to irreversible hydrocolloid is known as________________? |
| A. | Injecting technique |
| B. | Laminate technique |
| C. | Immersion technique |
| D. | Tempering technique |
| Answer» C. Immersion technique | |
| 574. |
A rough / Chalky surface of the cast is due to_______________? |
| A. | Not waiting for 20 min before pouring |
| B. | High speed accelerator |
| C. | Air incorporation in the mix |
| D. | All of the above |
| Answer» E. | |
| 575. |
A restorative material which has a high proportional limit, compared with one with a lower proportional limit would have________________? |
| A. | Greater ductility |
| B. | Greater toughness |
| C. | A higher modulus of elasticity |
| D. | A higher modulus of elasticity |
| E. | More resistance to permanent deformation |
| Answer» F. | |
| 576. |
A patient who has had a recent amalgam filling in the upper teeth has a gold filling in the lower teeth, the patient complains of pain. The reason for this can be mainly_____________? |
| A. | Improper amalgam filling |
| B. | Pulp exposure |
| C. | Galvanism |
| D. | None of the above |
| Answer» D. None of the above | |
| 577. |
A material which partially transmits light & partially scatters it________________? |
| A. | Reflector |
| B. | Translucent |
| C. | Transparent |
| D. | Opaque |
| Answer» D. Opaque | |
| 578. |
A material which is a mixture of two different materials and its properties are_____________? |
| A. | Composite |
| B. | Complex material |
| C. | Combined |
| D. | Compound |
| Answer» B. Complex material | |
| 579. |
A material behaves in certain ways above and below the proportional limit on a stress strin curve, which of the following is correct______________? |
| A. | Above the proportional limit a material function in a plastic manner, while below the proportional limit it behaves as an elastic |
| B. | Above the proportional limit a material functions in an elastic manner, while below the proportional limit it behaves as an plastic |
| C. | Either A or B |
| D. | Neither A or B |
| Answer» B. Above the proportional limit a material functions in an elastic manner, while below the proportional limit it behaves as an plastic | |
| 580. |
A laminate impression technique utilizes_______________? |
| A. | Syringe agar and chilled tray alginate |
| B. | Syringe agar and tray agar |
| C. | Syringe agar and impression compound |
| D. | Chilled alginate and impression compound |
| Answer» B. Syringe agar and tray agar | |
| 581. |
A highly polished surface on a metallic dental restoration aids considerably in the prevention of the____________? |
| A. | Dimensional change |
| B. | Thermal conductivity |
| C. | Warpage |
| D. | Tarnish and corrosion |
| Answer» E. | |
| 582. |
A good adhesive should possess all of the following EXCEPT________________? |
| A. | High adherend wetting |
| B. | High contact angle |
| C. | Low contact angle |
| D. | High flow |
| Answer» C. Low contact angle | |
| 583. |
A fluid having constant viscosity that does not depend upon the strain rate is said to be_______________? |
| A. | Viscoelastic |
| B. | Pseudoplastic |
| C. | Plastic |
| D. | Newtonian |
| Answer» E. | |
| 584. |
A crystal in metal substructure is_______________? |
| A. | Grain |
| B. | Nucleus |
| C. | Stroma |
| D. | None of the above |
| Answer» B. Nucleus | |
| 585. |
A common electrolyte used for plating copper indirect dies is_______________? |
| A. | Copper cynide |
| B. | Ionic copper |
| C. | Acidic copper sulfate |
| D. | Silver cyanide |
| Answer» D. Silver cyanide | |
| 586. |
4th state of matter is______________? |
| A. | Solid |
| B. | Liquid |
| C. | Gas |
| D. | Colloid |
| Answer» E. | |
| 587. |
18-B Stainless steel orthodontic wire has_______________? |
| A. | 18% Nickel 8% Chrominum |
| B. | 18% Chromium 8% Nickel |
| C. | 18% Chromium 8% Cobalt |
| D. | 18% Carbon 8% Iron |
| Answer» C. 18% Chromium 8% Cobalt | |