2351. The genetic ability of a bacterium to grow in the presence of several antibiotics is passed in vivo from one bacterium to another by_____________?
comments icon0

A. Transduction

B. Transformation

C. Conjugation

D. Rarefaction

2352. Which of the following absorbs maximum amount of water ?
comments icon0

A. Macrofilled resin

B. Microfilled resin

C. Light cure activated

D. Hybrid

2353. Deformation that is recovered upon removal of an externally applied force or pressure is known as_____________?
comments icon0

A. Flexural strain

B. Youngs modulus

C. Elastic strain

D. Plastic strain

2354. Group A B-hemolytic streptococcal infection of the pharynx may be followed in some by_____________?
comments icon0

A. Typhoid fever

B. Diphtheria

C. Rheumatic fever

D. Syphilis

2355. Phage conversion is required for________________?
comments icon0

A. All o f the above

B. Gonorrhoea

C. Diptheria

D. Tularemia

2356. Black pigmented anaerobes include all of the following except______________?
comments icon0

A. Tannerella

B. Buccae

C. Porphyromonas

D. Prevotella

2357. In heat cure denture base acrylic resins the monomer is___________?
comments icon0

A. Polymethylmethacrylate

B. Ethylmethacrylate

C. Methacrylate

D. Methyl ethyl methacrylate

2358. Signs of tyhoid fever is/are_____________________?
comments icon0
A. All of the above

B. Haemorrhage

C. Osteomyelitis

D. perforation

2359. The advantage of unfilled methyl methacrylate is that______________?
comments icon0
A. It can be finished smoothly

B. Its non-irritation to pulp

C. It has a low degree of flow

D. Its wear resistant is high

2360. Etching of dentin does not include_____________?
comments icon0

A. Exposure of collagen fibers

B. Removal of smear layer

C. Increases surface energy

D. Opening of dentinal tubules

2361. If resin is packed in sandy stage what will be seen in the processed denture ?
comments icon0

A. Inhomogeneous colour

B. Increased strength

C. Porosity

D. Distortion

2362. Materials which has high compressive strength and low tensile strength is classified with property of________________?
comments icon0

A. Malleability

B. Ductility

C. Resilient

D. Brittleness
2363. Flow of a material refers to_______________?
comments icon0

A. The consistency of material when mixing

B. Continued change of the material under a given load

C. The homogencity of gypsum products

D. Dimensional change of the material during settings

2364. Wasserman test test is diagnostic of__________________?
comments icon0

A. TB

B. Tyhoid

C. Syphilis

D. Gonorrhea

2365. Inactivated microorganisms are used in the manufacture of which of the following________________?
comments icon0
A. Salk vaccine

B. All of the above

C. Tetanus toxoid

D. Sabins oral vaccine

2366. To prevent porosity in self-cure acrylic resin, curing should be carried in______________?
comments icon0

A. Under tap water

B. Under vacuum pressure

C. Hot water

D. Cold water

2367. About polymerization shrinkage of composite all are true, except______________?
comments icon0

A. Acid etching and priming will decrease polymerization shrinkage

B. Polymerization shrinkage is greater if bonded surface area is lesser than unbounded surface area

C. Polymerization shrinkage is high if within the enamel margins

D. Microleakage can occur because of polymerization shrinkage

2368. Leptospirosis, all are true except______________?
comments icon0

A. Incubation period is 10 days

B. It is sensitive to penicillin

C. Faeces & urine of rodents is the cause

D. Onset of IgM in 2 days
2369. One bottle system of adhesive resins_____________?
comments icon0

A. Separate etching step not required

B. Separate etching step is still required

C. 4th generation bonding agents

D. Contains only primer

2370. Which one of the following is used as filler in composite resins ?
comments icon0

A. Aluminium

B. Silicates

C. Quartz

D. Zinc particles

2371. Which of the following zones is used for melting alloy during casting______________?
comments icon0

A. Oxidizing flame

B. All of the above

C. Reducing flame

D. Green flame

2372. Vibrio cholera was discovered by_________________?
comments icon0

A. Virchow

B. Medintoff

C. Koch

D. John snow

2373. Group A carbohydrate of Str. pyogenes cross reacts with human_________________?
comments icon0

A. Vascular intima

B. Myocardium

C. Cardiac valves

D. Synovial fluid

2374. If resin is packed in sandy stage what will be seen in the processed denture ?
comments icon0

A. Inhomogeneous colour

B. Distortion

C. Porosity

D. Increased strength

2375. The temperature required for cultivating mycobacterium________________?
comments icon0

A. 2 degree

B. 27 degrees

C. 37 degrees

D. 0 degree

2376. Tuberculin test screens for_____________?
comments icon0

A. Hemoral immunity

B. Phagocyte dysfunction

C. Complement function

D. Cell mediated immunity
2377. Bacteria acquire characteristics by all the following except_______________?
comments icon0

A. Through plasmids

B. Through bacteriophages

C. Incorporating part of host DNA

D. Through conjugation

2378. Subsurface porosity is due to_____________?
comments icon0

A. Thickness of the resin

B. Thermal changes

C. Lack of temperature

D. Packing past the dough stage

2379. Fimbriae are demonstrated by ___________________?
comments icon0

A. Culture

B. Gram stain

C. Biochemical reaction

D. Haemagglutination test
2380. Toxic shock syndrome is due to the following virulence factor_____________?
comments icon0

A. Streptolysin 0

B. M protein

C. Pyrogenic exotoxin

D. Carbohydrate cell wall

2381. Among The infectious diseases transmitted by food, one is___________________?
comments icon0

A. Viral stomatitis

B. Diptheria

C. Tuberculosis

D. Typhoid fever
2382. Use of dimethyl-P-toluidine is indicated for_______________?
comments icon0

A. Thermal polymerization of acrylic

B. Chemical polymerization

C. To inhibit the action of benzoyl peroxide

D. Retarding the polymerization reaction

2383. Acrylic resins are used for______________?
comments icon0
A. All of the above

B. Anterior restorations

C. Denture base

D. Temporary bridges

2384. The pattern for the metallic framework of a removable partial denture is fabricated from________________?
comments icon0

A. Inlay wax type-II

B. Modelling wax

C. Casting wax

D. Boxing wax

2385. Inadequate pressure application during flasking_______________?
comments icon0

A. Causes fracture of denture

B. Causes poor quality of colour

C. Increases vertical dimension

D. Causes teeth to be shrunken in investment

2386. Which of the following provide opacity to composite ?
comments icon0

A. BIS-GMA

B. TEGDMA

C. None of the above

D. Ti02
2387. What is the disadvantage of using composites as restorative material ?
comments icon0
A. Decreased wear resistance

B. Increased thermal conductivity

C. None of the above

D. Decreased thermal conductivity

2388. In a patient with typhoid, diagnosis after 15 days of onset of fever is best done by_____________?
comments icon0

A. Blood culture

B. Urine culture

C. Stool culture

D. Widal test
2389. Negative staining is used to demonstrate________________?
comments icon0
A. Bacterial fimbriae

B. Bacterial spore

C. Bacterial Flagella

D. Bacterial capsule

2390. A full course of immunization agianst. Telanus with 3 doses to Tetanus toxoid, confers immunity for how many years ?
comments icon0

A. 15

B. 5

C. 20

D. 10
2391. The major intestinal pathogens which are non-lactose fermenters are_________________?
comments icon0

A. Klebsiella

B. Paracolons

C. Escherichia

D. Salmonella
2392. Polymerisation of heat-cured methyl methacrylate is initiated by______________?
comments icon0

A. Methyl ether

B. Tertiary amine

C. Hydroquinone

D. Benzoyl peroxide free radical
2393. Munsell system is used to_________________?
comments icon0
A. Measures different colours quantitatively

B. Define and measure colour qualitatively

C. Define and measure physical properties of gold alloys

D. Evaluate brittleness of different alloys

2394. Hydroquinone is added to methyl methacrylate monomer_________________?
comments icon0

A. To enable polymerization reaction at room temperature

B. To prevent polymerization during storage

C. To initiate release of free radicalls

D. All of the above

2395. Which of the following hardness test is a micro hardness test ?
comments icon0

A. Rockwell

B. Knoop

C. Brinnel

D. Shore-A

2396. Which of the following has the highest modulus of elasticity ?
comments icon0

A. Amalgam

B. Composite Resin

C. Enamel

D. Dentin

2397. Cough plate method is used to identify________________?
comments icon0

A. Y. pestis

B. Pertussis

C. Mycoplasma

D. M-Tuberculosis

2398. To cure a heat cure resin, a proper heating cycle is necessary_____________?
comments icon0

A. To prevent volume expansion

B. All of the above

C. To prevent the porosity

D. To prevent warpage

2399. Coefficient of thermal expansion of which of following is most similar to that of tooth ?
comments icon0

A. Gold inlay

B. Acrylic resin

C. Gold foil

D. Silicate cement
2400. Which of the following fulfil all the criterias of kichs postulates ?
comments icon0

A. Mycobacterium leprae

B. N. gonorrhoeae

C. None of the above

D. Treponema pallidum