medical MCQs – Page 142

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 Review each marked answer and report any item that may be outdated or unclear.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

2821. The solid solution of silver and mercury is called_______________?
0

A. y

B. y1

C. B1

D. y2

2822. Which of the following cements is contraindicated in mouth breathers_______________?
0

A. Polycarboxylate

B. Silicate

C. Zinc phosphate

D. ASPA

2823. Powdered gold is___________________?
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A. Made by a combination of chemical precipitation and atomization

B. Made by beating pure gold at high temperatures

C. Made by milling pure gold ingots

D. Made by electrolytic precipitation

2824. Secondary caries is least likely seen with_______________?
0

A. GIC

B. Silicate cement

C. Zinc phosphate

D. Polycarboxylate

2825. Mode of failure during dislodgement of prosthesis cemented with zinc poly carboxylate cement is usually seen at the_____________?
0

A. Cleavage through the cement layer

B. Cement prosthesis interface

C. Fracture of tooth or prosthesis

D. Cement tooth interface

2826. The ideal temperature of water bath for softening fluid wax is about________________?
0

A. 51 to 54 degree F

B. 51 to 54 degree C

C. 70 to 75 degree C

D. 70 to 75 degree F

2827. In porcelain metal elements are embedded in the matrix of________________?
0

A. Plastic

B. Glass

C. Rubber matrix

D. Resin matrix

2828. The setting time of ZnPO4 cement can be retarded by_____________?
0

A. mixing more powder to the liquid

B. slower addition of powder to liquid

C. mixing powder to liquid, checked by water

D. faster addition of powder to liquid

2829. Best marginal seal is provided by____________?
0

A. Resin

B. Zinc oxide eugenol

C. Gutta-percha

D. Zinc phosphate

2830. Pure mucous glands are_____________?
0

A. Lingual glands

B. Glosso palatine & palatine glands

C. Vonebners glands

D. Labial and buccal glands

2831. When Gold fused with porcelain is fired at very high temperature greenish discoloration of cervical margin is due to________________?
0

A. Formation of excess oxides

B. Presence of copper

C. High firing temperature

D. Disintegration of opaque layer

2832. Which one of the following restorative materials is having coefficient of thermal expansion close to that of tooth enamel and dentin ?
0

A. Pure gold

B. Type II Glass ionomer cement

C. Silver amalgam

D. Microfilled composite resins

2833. The main components is sillicophosphate cement________________?
0

A. Zinc phosphate and GIC

B. ZOE and Silicate

C. Silicate and GIC

D. Zinc phosphate and SIlicate

2834. Which component of zinc oxide-eugenol cement gives its strength ?
0

A. Oil of cloves

B. Zinc oxide

C. Zinc acetate

D. Rosin

2835. Which of the following bur is used in the preparation of cavity restored with porcelain fused to metal ?
0

A. Diamond bur

B. Carbide bur

C. Diamond but for porcelain and carbide bur for metal

D. Stainless steel bur

2836. Crocus cloth is________________?
0

A. Emery

B. Rouge

C. Garnet

D. Pumice

2837. Of the total amount of saliva secreted by all the salivary glands, about 60% is secreted by the_____________?
0

A. None of the above

B. Sublingual glands

C. Submandibular glands

D. Parotid glands

2838. Which of the following is not present in saliva________________?
0

A. Bicarbonate

B. Lysozyme

C. Trypsin

D. Phosphate

2839. Percentage of zinc in ZOE cement is__________________?
0

A. 70%

B. 90%

C. 80%

D. 60%

2840. In non zinc containing dental amalgam alloy the percentage of zinc present is______________?
0

A. Less than 0.01%

B. Less than 0.02%

C. Less than 0.1%

D. None of the above

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