2302. Organ of locomotion in bacteria is________________?
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A. Cell wall

B. Flagella

C. Fimbria

D. Capsule

2303. Which of the following inhibitor accelerator system uses light activation composite ?
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A. Diketone-amine

B. Peroxide-amine

C. Organic acid-peroxide

D. Organic acid-metal oxide

2304. Which of the following is an example of a composite material ?
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A. Gold alloy

B. Colloidal silica

C. Wax

D. A filled resin
2305. Malignant pustule is referred to_________________?
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A. Facio-cervical actinomycosis

B. Infected squamous cell carcinoma

C. None of the above

D. Cutaneous anthrax
2307. Which one of the following is used as filler in composite resins ?
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A. Silicates

B. Zinc particles

C. Quartz

D. Aluminium

2308. All are true about bordetella pertussis except______________?
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A. Presence of antibodies in serum in diagnostic of the disease

B. It may occur in children and young adult after vaccination

C. Bacteria culture from nasopharyngeal swab is the definitive diagnosis

D. Most common cause is B. Petrussis

2309. The commonest method of detection of diptheria carriers is_______________?
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A. Casonis test

B. Charles test

C. Dick test

D. Schick test
2310. Non metal which conducts elactricity______________?
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A. Carbon

B. Acrylic

C. Porcelain

D. Graphite
2311. When restoring a tooth with resin material, acid etching can do all of the following except______________?
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A. Permit chemical bonding between resin and enamel

B. Increase the surface area

C. Create surface irregularities in enamel for better mechanical retention of resin

D. Condition the tooth surface for better wetting

2312. Radio opacity to composite resins is rendered by_______________?
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A. Fluoride particles

B. Silica glass

C. Barium glass and strontium glasses

D. Organic matrix

2313. In self-cure acrylic resin, activator is_____________?
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A. Quaternary ammonium compound

B. Tertiary amine

C. Toluidine

D. Benzoyl peroxide

2314. Thumb print appearance in culture film smear is seen______________?
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A. Bacillus anthracis

B. Brucella species

C. Bordetelia pertussis

D. Clostridium weichii

2316. The polymerization of self-curing resin takes faster in______________?
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A. Under pressure

B. Cold water

C. In vaccum

D. Hot water
2318. Anaerobic bacteria grow_______________?
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A. in the presence of nitrogen

B. in the presence of oxygen

C. differential media

D. in the absence of oxygen
2319. Bacteria with potent exotoxin is_______________?
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A. Pseudomonas

B. Clostridium tetani

C. Shigella

D. Klebsiella

2320. The point at which a stress of a material exhibits a specific limited deviation P is called_______________?
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A. Yield strength

B. Proportional limit

C. Tensile strength

D. Ultimate strength

2321. Chlamydia causes all of the following except________________?
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A. Pneumonia

B. Non-gonococcal urethritis

C. Trachoma

D. Parotitis
2322. Borrelia vincenti is always associated with______________?
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A. None of the above

B. Spirochaetes

C. Treponema vincenti

D. Fusiform bacilli
2323. KHN of enamel is close to______________?
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A. Prcelain

B. Amalgam

C. Pure gold

D. Composite

2324. Leprosy bacilli are transmitted from person to person by all except______________?
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A. From open sore

B. Dischange from nasal mucosa

C. Through breast milk

D. Through intact skin

2325. The ability of the base to resist occlusal forces and to support the restoration is affected by_______________?
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A. Modulus of elasticity

B. Youngs modulus

C. Tensile strength

D. Compressive strength
2327. Lancefields classification of B hemolytic streptococcus is based on______________?
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A. Polysaccharide C antigen

B. M Protein

C. Type of lipid in cell membrane

D. Physiological properties

2328. In measuring Vickers hardness no. Which of the following is used________________?
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A. Spherical indenter

B. Steel ball indentation

C. Rhomboid shaped indenter

D. 136-degree diamond pyramid
2329. Composite has_______________?
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A. Resin

B. None

C. Filler

D. Resin & Filler
2332. Strain is defined as_____________?
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A. An applied load or force

B. An internal force opposing an applied load

C. An external force opposing an applied load

D. A deformation resulting from an applied load
2333. Stress in defined as_______________?
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A. An applied load or force

B. An internal force opposing an applied load

C. An external force opposing an applied load

D. A deformation resulting from an applied load

2334. Diphtheria is pathogenic only when infected with______________?
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A. Alfa phage

B. Lambda K12

C. Beta phage

D. Delta Phage

2335. The main advantage of composites over unfilled direct filling resin is their_____________?
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A. Lower thermal co-efficient of expansion

B. Lower modulus of elasticity

C. Esthetic excellence

D. Higher solubility in saliva

2336. The causative organism of syphilis is___________?
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A. Leptospira interrogans

B. Chalamydia trachomatis

C. Borrelia burgolorferi

D. Treponema pallidum
2337. The most common pathogens responsible for nosocomial pneumonias in the ICU are______________?
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A. Virus infections

B. Mycoplasma

C. Gram positive organisms

D. Gram negative organisms
2338. Acid-etching is done for_______________?
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A. 90 seconds

B. 120 seconds

C. 60 seconds

D. 30 seconds
2339. Grape bunch shaped colonies are seen in______________?
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A. Streptococcus

B. Gonococci

C. E.coli

D. Staphylococcus
2340. Back pressure porosity can be avoided by________________?
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A. Using asbestos linear

B. Preventing rapid heating the investment in burnout oven

C. Placing the sprue at least one quarter inch away form the end of casting ring

D. Using a short and wide sprue

2341. Marginal leakage related to temperature change occurs to the greatest extent with_______________?
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A. Direct filling gold

B. Amalgam alloy

C. Composite resin

D. Unfilled resin
2342. Most advantageous indication of acid etching is______________?
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A. Decrease micro leakage

B. Decrease porosity in restorative material

C. Decrease polymerization shrinkage

D. Decrease coefficient of thermal expansion

2344. Staphylococcus does not causes_______________?
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A. Pneumonia

B. Scarlet fever

C. Osteomyelitis

D. Abscess

2345. The particle size in microfilled composites is_____________?
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A. 0.5 to 1.0 microns

B. 0.05 to 0.04mm

C. 0.3 to 0.4mm

D. 0.01 to 0.1 microns
2347. Which of the following is an acid-fast bacillus_____________?
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A. Mycobacterium bacilli

B. Treponema pallidum

C. Neisseria gonorrhea

D. All of the above

2349. Boiling point of methyl methacrylate________________?
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A. Is at normal room temperature

B. Equal of BP of water

C. B.P of water

D. < B.P of water

2350. For esthetic areas where high luster is required the restoration used usually______________?
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A. Hybrid resin composites

B. Macrofilled resin composites

C. Microfilled resin composites

D. Glass ionomer restoratives