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Medical Science Mcqs 5254 MCQs [All-Courses]

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Medical Science is the study of human health, diseases, prevention, and treatment, focusing on diagnosis, patient care, and medical research to improve healthcare outcomes.

All Topics  5254

Over-trituration of silver alloy and mercury_______________?
A Reduces contraction
B Increases the strength of lathe cut alloy but reduces the strength of spherical alloy amalgam
C Decreases creep
D Gives al dull and crumbly amalgam
Correct Answer: Increases the strength of lathe cut alloy but reduces the strength of spherical alloy amalgam
Mercury intoxication in dental office mainly results from____________?
A Direct contact with the mercury
B Inhalation of mercury vapours
C Ingestion of mercury
D None of the above
Correct Answer: Inhalation of mercury vapours
The threshold limit value of mercury exposures is_______________?
A mg / m3
B 0.05 mg / m3
C mg / m3
D mg / m3
Correct Answer: mg / m3
The tarnished layer of silver amalgam consists of________________?
A Sulphides of silver
B Oxides of tin
C Chlorides of tin
D All of the above
Correct Answer: Sulphides of silver
Which phase provides maximum strength in hardened mercury/silver alloy ?
A Silver / Mercury phase
B Silver / Tin phase
C Tin / Mercury phase
D Zinc / Mercury phase
Correct Answer: Silver / Tin phase
Copper content in low copper amalgam is________________?
A 6%
B 12-30%
C 29%
D 19%
Correct Answer: 6%
Which of the following silver amalgam alloy have the maximum strength________________?
A Lathe cut
B Spherical
C Admixed
D Single composition
Correct Answer: Single composition
Porcelain denture teeth________________?
A Have a higher coefficient of thermal expansion than acrylic teeth:
B Have a lower abrasion resistance than enamel
C Should be used where the inter dental clearance is small
D Have a higher abrasion resistance than gold
Correct Answer: Have a higher abrasion resistance than gold
Glass ionomer cements are composed of______________?
A Alumino silicate powder and phosphoric acid
B Aluminosillicate powder and polyacrylate
C Zinc oxide powder and phosphoric acid
D Zinc oxide powder and polyacrylate liquid
Correct Answer: Aluminosillicate powder and polyacrylate
Minimum thickness for type I zinc phosphate cement should be_______________?
A 15 microns
B 25 microns
C 50 microns
D 100 microns
Correct Answer: 25 microns
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