medical MCQs – Page 150

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 Review each marked answer and report any item that may be outdated or unclear.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

2981. Compare to conventional amalgams, spherical amalgams_______________?
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A. Require heavy compection forces

B. None of the above

C. Require more mercury

D. Have longer setting times

2982. The pure form of gold used in dentistry is known as___________________?
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A. Non cohesive gold

B. Class IV casting gold

C. Cohesive gold

D. Class I casting gold

2983. White gold alloy predominantly is______________?
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A. Gold with much of chromium

B. Gold added with calcium

C. Gold added with palladium

D. Gold with silver

2984. The melting point of titanium is __________ degree celsius?
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A. 1560

B. 1886

C. 1056

D. 1668

2985. Myoepithelial cells are present in________________?
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A. Striated duct

B. Serous cells

C. Intercalated & terminal duct

D. Mucous cells

2986. The components of future TMJ shows development at_____________?
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A. 6 weeks

B. 10 weeks

C. 16 weeks

D. 18 weeks

2987. Percentage of tin in low copper alloy is______________?
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A. 26-28%

B. 22-30%

C. 30-35%

D. 13-32%

2988. Which of the following is not correct ?
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A. None of the above

B. In case of pituitary gigantis, all sinuses assume a larger volume than normal

C. Malignant lesions of maxillary sinus produce their manifestations in maxillary teeth

D. In chronic infections, the pain may mimic neuralgia of dental origin

2989. Most preferable cement for temporary restoration______________?
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A. ZOE

B. GIC

C. Ca (OH)2

D. Zinc polycarboxylate cement

2990. Which of the following is correct?
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A. All of the above

B. Roof of mandible contains thin, compact bone

C. Condyle contains red bone marrow

D. Articular tubercle is composed of spongy bone covered with thin compact bone

2991. pH of fully set zinc phosphate______________?
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A. 4-Mar

B. 5-Apr

C. 6-7

D. 8-Jul

2992. The hygroscopic technique is associated with______________?
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A. Silicate

B. Amalgam

C. Investment

D. Hydrocolloids

2993. Cavo surface angle for amalgam resoration is butt joint as____________?
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A. Increased compressive, increased tensile strength

B. It increases compresssive and tensile strengths

C. Decreased compressive, decrease tensile strength

D. Decreased compressive, increased strength

2994. The tow cements which hold with the tooth are_______________?
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A. ZnPO4 and silicate

B. GIC and ZnPO4

C. GIC and silicate

D. GIC and polycarboxylate

2995. The setting of zinc phosphate may be retarded by ?
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A. Increase the addition of powder to liquid

B. Diluting the liquid with water

C. Increased in the ratio of powder to liquid

D. Decrease the addition of powder to liquid

2996. Super abrasive is________________?
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A. Silicon arbide

B. Aluminum oxide

C. Sand

D. Diamond

2997. Which of the following acts as accelerator in Zinc oxide eugenol______________?
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A. ZnCl2 + ZnSO2

B. Eugenol + ZnO

C. ZnCl2 + Eugenol

D. Zn(OH)2 + ZnO

2998. Co-efficient of Thermal exansion of amalgam is______________?
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A. 14.0 a (ppm k-1)

B. 6.6 a (ppm k-1)

C. 25.0 a (ppm k-1)

D. 11.4 a (ppm k-1)

2999. Placing cast under tap water is to be avoided as______________?
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A. H2O interferes with Crystallization of dihydrate

B. H2O inhibits polymerization of dental resin

C. Gypsum is slightly soluble in water and the surface of the cast will be eroded

D. H2O interferes with hygroscopic expansion

3000. The maximum shrinkage during firing proces in ceramic occurs in__________________?
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A. Low Bisque stage

B. Medium Bisque stage

C. High Bisque stage

D. Fusion stage

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