medical MCQs – Page 144

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 Review each marked answer and report any item that may be outdated or unclear.

2861. Which is gypsum product_______________?
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A. All of the above

B. Investment

C. Stone

D. Plaster

2862. Mercury intoxication in dental office mainly results from____________?
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A. Direct contact with the mercury

B. None of the above

C. Ingestion of mercury

D. Inhalation of mercury vapours
2863. Opaque porcelain________________?
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A. Is Feldspathic glass

B. Not used to mask the colour of the cement used in placing of restoration

C. Used to produce the characteristic translucence, which is an inherent aspect of the incisal edge in natural teeth

D. Contains opacifier like zirconium and titanium oxide
2864. Stage recognized in the firing of dental porcelain given below. Which of state is not correct ?
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A. Medium bisque

B. High bisque

C. Cold stage bisque

D. Low bisque

2865. The function of myoepithelial cells may be______________?
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A. Initiating contraction

B. Support for the end piece during active secretion of saliva

C. All of the above

D. Provide signals to the acinar secretary cells for structure organization

2866. Decrease in creep occurs in_______________?
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A. Decreases with condensation pressure

B. Under trituration or over trituration of amalgam

C. Cannot be predictable

D. Increase with condensation pressure
2867. The first porcelain tooth material was introduced by______________?
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A. McClean

B. Ash

C. DeChemant

D. Plateau

2868. The major component of zinc phosphate cement is_____________?
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A. None of the above

B. Phosphoric acid

C. Zinc

D. Zinc oxide
2869. The higher the Hg alloy ratio in dental amalgam________________?
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A. More matrix matrial formed

B. Lower the creep value

C. More gamma 1 phase formed

D. Higher the strength

2870. Electralloy is an alloy of________________?
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A. Gold and Calcium

B. Cobalt and Chromium

C. Tin and chromium

D. Gold and Platinum

2871. All of the following is used as accelerator in zinc oxide eugenol cement except_______________?
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A. Calcium chloride

B. Bromoglycerine

C. Acetic acid

D. Zinc acetate dehydrate

2872. Which is the cement with adhesive properties ?
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A. Zinc oxide eugenol

B. Zinc polycarboxylate

C. SIlicate

D. Glass ionomer

E. Both B & D
2873. Whartons duct drains the_______________?
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A. Submandibular gland

B. Lacrimal gland

C. Pancreas

D. Parotid

2874. Which of the following statement is true regarding lathe cut low Copper silver alloy ?
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A. Requires least amount of mercury

B. Achieves high compressive strength at 1 hr.

C. Has tensile strength both at 15 minutes and 7 days is comparable to high copper, unicompositional alloys

D. Has lower cree value

2875. Which of the following is the main constituent of porcelain__________________?
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A. Kaolin

B. Quartz

C. Clay

D. Feldspar
2876. Which of the following is wrong?
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A. Condylar process & angle in mandible, and tuberosity in maxilla contain hemopoietic cellular marrow

B. The architecture of type I spongiosa is seen in mandible

C. Type II spongiosa is seen in maxilla

D. Bundle bone contains a lesser amounts of calcium salts than other types of bony tissue
2877. The content of saliva include all except____________?
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A. Lipase

B. Urea

C. Amylase

D. Lysoenzyme

2878. Absorption of mercury in the human body occurs least from_____________?
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A. Gastro-intestinal Track

B. Skin

C. Lungs

D. Kidneys
2879. The best tissue tolerated material for crown and bridge_______________?
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A. Highly polished porcelain

B. Highly glazed porcelain

C. Highly polished metal

D. Highly polished acrylic

2880. Cohesion of gold foil is an example of______________?
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A. Annealing

B. Adaptation

C. Atomic attraction and welding

D. Wedging