medical MCQs – Page 148

Practise multiple-choice questions from medical for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

medical Mcqs

1. oral anatomy 2. microbiology 3. oral pathology and medicine 4. physiology 5. biochemistry 6. general anatomy 7. dental materials 8. pharmacology 9. pathology 10. oral histology

2941. Dispersion of crystalline phase to strengthen ceramics results in_________________?
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A. aluminium porcelain

B. Glazed porcelain

C. dispersed porcelain

D. All of the above

2942. Flux used in dental ceramic is________________?
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A. Boric oxide

B. Kaolin

C. Silica

D. Alumina

2943. Which of the following is correct ?
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A. Sublingual gland bartholins duct mixed and predominantly mucous

B. Parotid stensons duct pure serous

C. Submandibular Whartons duct mixed and predominantly serous

D. All of the above

2944. Mercury rich condition in a slow setting amalgam alloy system in a resoration in______________?
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A. Merginal damage

B. All of the above

C. Accelerated corrosion

D. Fracture of the restoration

2945. Which of the following silver amalgam alloy have the maximum strength________________?
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A. Lathe cut

B. Admixed

C. Spherical

D. Single composition

2946. The largest component of amalgam alloy is_____________?
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A. Zinc

B. Tin

C. Silver

D. Copper

2947. Creep value of which of the following is the highest ?
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A. Admix alloy

B. Creep value of all the above mentioned alloys is same

C. Single composition alloys

D. Low copper amalgam alloy

2948. Glass ionomer cements are composed of______________?
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A. Alumino silicate powder and phosphoric acid

B. Zinc oxide powder and polyacrylate liquid

C. Aluminosillicate powder and polyacrylate

D. Zinc oxide powder and phosphoric acid

2949. Advantage of minimum mercury technique or Eames technique is all Except________________?
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A. High strength

B. Sets quickly

C. Needs no squeezing of excess mercury

D. Greater plasticity and adapts well to cavity walls

2950. What fraction of inhaled mercury vapors retained in the body ?
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A. 45-55%

B. 65-85%

C. 55-65%

D. More than 85%

2951. To prevent porosity in dental porcelain it should be backed________________?
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A. Boric oxide

B. In vacuum

C. For long period

D. Under pressure

2952. Ethoxy benzoic acid increases the strength and solubility of the cement______________?
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A. Silicate cement

B. Zinc phosphate cement

C. Zinc oxide eugenol

D. Polycarboxylate cement

2953. Electrolyte used for plating copper dies is________________?
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A. Copper cyanide

B. Acidic copper sulphate

C. Silver cyanide

D. Ionic copper

2954. The most commonly used accelerator in gypsum product is___________________?
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A. Aluminium sulfate

B. Potassium fluoride

C. Potassium sulfate

D. Sodium fluoride

2955. Polycarboxylate cement is used for_____________?
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A. Leuting

B. Die material

C. Temporary restoration

D. Permanent restoration

2956. In type II gold alloys _______ Karat gold is used?
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A. 22 K

B. 10 K

C. 18 K

D. 24 K

2957. The main purpose of adding metallic oxides in ceramic is________________?
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A. Transparency

B. Colour matching

C. Opacity

D. None of the above

2958. The dental amalgam is most resistant to________________?
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A. Impact stress

B. Tensile stress

C. Compressive stress

D. Shear stress

2959. Amalgam achieves 70% of the strength by____________?
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A. hours

B. 8 hours

C. 4 hours

D. 16 hours

2960. All of the following are true for traditional solution liner, except_________________?
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A. It is not necessary in moderately deep cavities under glass ionomer restoration

B. Have Film thickness of 1 50 microns

C. Protect the pulp from reaction products leaching out of restoration

D. Do not provide thermal or electric insulation

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