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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

What is the recommended for condensation of dental amalgam ?
A 35 pounds
B 3 pounds
C 15 lb
D 25 lb
Correct Answer: 3 pounds
Which is not true about high copper amalgam alloys______________?
A Low tensile and compressive strength
B Low Hg: Alloy ratio
C High tensile strength
D Low creep
Correct Answer: Low tensile and compressive strength
Amalgam means_____________?
A A metallic powder composed of silver, tin, copper and zinc
B An alloy of two or more metals one of which is mercury
C An alloy of two or more metals that have been dissolved in each other in the molten state
D A metallic substances in powder or tablet from that is mixed with mercury
Correct Answer: An alloy of two or more metals one of which is mercury
In amalgam alloy which acts as oxygen scavenger_____________?
A Cu
B Zn
C Pd
D Ag
Correct Answer: Zn
By increasing the percentage of which metal, the strength and hardness of amalgam increases_____________?
A Ag
B Zn
C Cu
D Hg
Correct Answer: Cu
Which of the following statement is true regarding lathe cut low Copper silver alloy ?
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
Correct Answer: Has tensile strength both at 15 minutes and 7 days is comparable to high copper, unicompositional alloys
Creep value of which of the following is the highest ?
A Low copper amalgam alloy
B Admix alloy
C Single composition alloys
D Creep value of all the above mentioned alloys is same
Correct Answer: Low copper amalgam alloy
Amalgam achieves 70% of the strength by____________?
A hours
B 4 hours
C 8 hours
D 16 hours
Correct Answer: hours
Mercury is toxic because it_____________?
A Complexes with hemoglobinto form methemoglobin
B Inhibits hemoglobin synthesis, producing anemia
C Inhibits anaerobic glycolysis
D Binds to sulfhydryl groups
Correct Answer: Binds to sulfhydryl groups
What fraction of inhaled mercury vapors retained in the body ?
A 45-55%
B 55-65%
C 65-85%
D More than 85%
Correct Answer: 65-85%
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