medical MCQs – Page 123

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 Review each marked answer and report any item that may be outdated or unclear.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

2441. Which one of the following is most elastic ?
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A. a titanium

B. Chrome-cobalt-nickel

C. Nickel-titanium

D. B titanium

2442. which of the following is anaerobic_______________?
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A. Pseudomonas

B. Klebsiella

C. E.coli

D. Bacteroides

2443. Ductility of a material is a measure of its_______________?
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A. Grain elongation

B. Cold working

C. Anealing

D. Work hardening

2444. All of the following organisms are known to survive intracellularly except_____________?
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A. Streptococcus pyogenes

B. Salmonella typhi

C. Legionella pneumophila

D. Neisseria meningitides

2445. The most important disadvantage of acrylic denture base is_______________?
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A. porosity

B. Shrinkage

C. Water absorption

D. Tooth breakage

2446. In T.B cell mediated immunity is by_______________?
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A. B lymphocytes

B. None of the above

C. CD 8*

D. CD 4*

2447. The function of the coupling agent in a restorative resin is to allow______________?
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A. Bonding between filler and resin

B. Bonding between filler crystals

C. Bonding between tooth and resin

D. Adhesion of resin particles

2448. Modulus of elasticity means_______________?
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A. Ductility of a material

B. Rigidity or stiffness of the material

C. Ability to be stretched with permanent deformation

D. Malleability of the metal

2449. When two metals are completely miscible in liquid state and they remain completely mixed on solidifiation, the alloy formed is called________________?
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A. Solid solution

B. Inter metallic compounds

C. Eutectic mixture

D. Peritectic mixture

2450. Along with polymerisation shrinkage, one of the major disadvantages of polymethyl methacrylate as denture base resin are its poor_____________?
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A. Mechanical properties

B. Thermal properties

C. Biological properties

D. Esthetic properties

2451. The strength of a gypsum investment is dependent on_______________?
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A. Gypsum

B. Carbon content

C. Copper

D. Silica content

2452. The melting point of silver is_____________?
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A. 960 Centigrade

B. 850 Centrigrade

C. 1063 centigrade

D. 1123 Centrigrade

2453. Etchant preferred in gel from than in liquid form________________?
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A. None of the above

B. Better control over placement

C. Helps in visualization while placement

D. Enhance and concentrate the action of acid

2454. The simplest alloy is a_______________?
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A. Ternary alloy

B. Peritectic allowy

C. Solid solution

D. Eutectic alloy

2455. ASO (Antistreptolysin 0) test is uesd for the diagnosis of________________?
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A. Rheumatie fever

B. Typhoid fever

C. Rheumatoid arthritis

D. Rickettsial fever

2456. Setting expansion is advantageous in__________________?
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A. Casts

B. Investment

C. Dies

D. Models

2457. Electron microscopic examination of the bacterial flora of necrotising ulcerative gingivitis indicates the presence of microorganisms within non-necrotic tissues in advance of other bacteria. The organisms involved are______________?
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A. Filamentous rods

B. Spirochetes

C. Bacteriophages

D. Cocci

2458. Salivary peroxidise system is known to be effective agianst________________?
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A. Streptococcus mutans

B. Actinomyces viscosus

C. Lactobacillus acidophilus

D. Veilonella parvula

2459. Quartz tungsten light cure device minimum output of energy should not be less than_____________?
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A. 350 mw/cm2

B. 450 mw/cm2

C. 300 mw/sm2

D. 400 mw/cm2

2460. The most common coupling agents are organic silicon compound called_______________?
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A. Parabane

B. Silane

C. Chelane

D. Ligane

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