medical MCQs – Page 115

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 Review each marked answer and report any item that may be outdated or unclear.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

2281. Which of the following constituents is common in occlusal sealants, bonding agents, composite resins ?
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A. Polymethyl methacrylate

B. Silica filter

C. BIS GMA

D. Benzoin methyl ether

2282. Compressive stress is computed by dividing the external force by the_______________?
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A. Strain of the test specimen per unit length

B. Elasticity of the test specimen in strain

C. Area of the test specimen upon which the weight rests

D. Length of the test specimen beneath the force

2283. Cleaning of base metal alloy is done by______________?
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A. Cold H2SO4

B. Sand blasting with aluminium oxide

C. Cold HF

D. Warm HCI

2284. The virulence factors of Neisseria gonorrhea include all of the following except____________?
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A. IgA Protease

B. M-Proteins

C. Pili

D. Outer membrane proteins

2285. Dentin conditioner has the following function______________?
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A. Removes smear layer

B. Helps in bonding with composite

C. Forms a thin resin layer over exposed collagen fibrils

D. Increases surface energy of dentin

2286. Test for differentiating virulent form non-virulent tubercular bacilli_____________?
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A. Neutral red test

B. Aryl sulphatase test

C. Niacin test

D. Catalase peroxidase test

2287. Denture acrylics contain cross-linking agents mainly to improve their_____________?
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A. Surface hardness

B. Tissue compability

C. Internal color

D. Craze resistance

2288. The ability of an alloy to withstand mechanical stresses without permanent deformation is reflected by its______________?
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A. Hardness

B. Fatigue resistance

C. Resilience

D. Elastic limit / Elastic strain

2289. Space lattice refers to_______________?
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A. Arrangement of atoms

B. Inter atomic imbalance

C. Arrangement of molecules

D. Inter atomic movement

2290. Which of the following will produce the most rigid restoration for framework of same dimension ?
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A. Wrought alloy

B. Cobalt-chrome alloys

C. Palladium alloys

D. Partial denture casting gold in hardened condition

2291. Coefficienty of thermal expansion of tooth enamel is closest to_______________?
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A. Polycarboxylate

B. Slicate cement

C. Composite

D. GIC

2292. The stiffness of a dental gold alloy is determined by its________________?
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A. Proportional limit

B. Modulus of elasticity

C. Ultimate tensile strength

D. Flow

2293. The elastic of plastic deformation to fracture a material is its_______________?
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A. Proportional limit

B. Youngs modulus

C. Brittleness

D. Toughness

2294. Composite resins in comparison to acrylic have_______________?
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A. High abrasive resistance

B. High water absorption

C. High polymerization shrinkage

D. Low compressive strength

2295. Staphylococcal food poisoning includes the following features_______________?
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A. Requires immediate antibiotics

B. Incubation period of 24 hours

C. Common with dairy products

D. Heat labile enterotoxin

2296. Actinomycetes is______________?
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A. Fungus

B. A yeast like form

C. Gram positive bacteria

D. Gram negative bacteria

2297. On a stained slide, clostridium tetani has the appearance of a__________________?
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A. Chain of beads

B. Drum stick

C. Bunch of a

D. Safely pin

2298. Phospholipid used to investigate syphilis by the reagin test is________________?
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A. Cardiolipin

B. Serine

C. Plasminogen

D. Palmityl lecithin

2299. The greatest stress which may be produced in a material such that stress is directly proportional to the strain is know as_____________?
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A. Modulus of elasticity

B. The proportional limit

C. The yield strength

D. The elastic limit

2300. A material which partially transmits light & partially scatters it________________?
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A. Reflector

B. Translucent

C. Transparent

D. Opaque

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