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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

Percentage of tin in low copper alloy is______________?
A 30-35%
B 26-28%
C 13-32%
D 22-30%
Correct Answer: 26-28%
Cause of expansion in zinc containing amalgam is_____________?
A Zinc and water
B Water
C Hydrogen
D Nascent oxygen
Correct Answer: Hydrogen
What is common in amalgam and ceramics ?
A More compressive strength but less tensile strength
B More compressive strength and tensile strength
C Less compressive strength but more tensile strength
D Less compressive strength and tensile strength
Correct Answer: More compressive strength and tensile strength
Which of the following constituents of amalgam alloy decreases expansion____________?
A Copper
B Zinc
C Silver
D Tin
Correct Answer: Tin
Impression compound is characterized by all of the following except_______________?
A Warps at room temperature
B Is a thermoset material
C Shows increased flow when kneaded with water
D Low coefficient of thermal conductivity
Correct Answer: Is a thermoset material
Rapid removal of rubber impression with a single firm motion results in____________________?
A Reduced dimensional instability
B Improved adhesion of the impression to the tray
C Minimal permanent deformation
D Reduced contamination by saliva
Correct Answer: Minimal permanent deformation
Which of the following impression material is rigid ?
A Zinc oxide-eugenol
B Reversible hydrocolloid
C Alginate
D Polysulphide rubber
Correct Answer: Zinc oxide-eugenol
Elastomers except: Polyether are_______________?
A Hydrophilic
B Hydrophobic
C Water loving impression materials
D Potassium alginates
Correct Answer: Hydrophobic
Hardening solutions are used with impression made of________________?
A Hydrocolloid
B Impression compound
C Elastomer
D Zinc oxide eugenol
Correct Answer: Hydrocolloid
Alginate impression material is similar to Agar-agar impression material in the following respect________________?
A Gelation increase in both on increase in temperature
B Mixing time is increased to reduce the setting time
C Deformation during removal of impression occurs due to distortion of gel fibers
D Both can be re-used for fresh impressions
Correct Answer: Deformation during removal of impression occurs due to distortion of gel fibers
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