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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

Which one of the following is not an objective of trituration ?
A Remove oxides from powder particle surface
B Keep the amount of gamma-1 or gamma-2 matrix crystals to maximum
C Pulverize pelletes into particles to aid in attack by mercury
D Achieve a workable mass of amalgam in minimum time
Correct Answer: Keep the amount of gamma-1 or gamma-2 matrix crystals to maximum
Gallium and indium added to Amalgam replace______________?
A Silver
B Tin
C Mercury
D Zinc
Correct Answer: Mercury
Which is true regarding lathe cut silver alloy_______________?
A Requires least amount of mercury
B Achieves lowest compressive strength at 1 hr.
C Has tensile strength both at 15 min & 7 days comparable to high copper unicompositional alloy
D Has low creep
Correct Answer: Achieves lowest compressive strength at 1 hr.
Adequate mixing of mercury is indicated by_______________?
A Dry Mix
B Shiny Mix
C Short Mixing Time
D None of the above
Correct Answer: Shiny Mix
For dental amalgam, the elastic modulus and tensile strength is______________?
A 40 Gpa and 60 – 100 Mpa
B 21 Gpa and 27 – 55 Mpa
C 350 Gpa and 10 – 120 Mpa
D 360 Gpa and 125 – 130 Mpa
Correct Answer: 21 Gpa and 27 – 55 Mpa
Which of the following does not occur in High Copper Amalgam ?
A Electrochemical Corrosion
B Chemical Corrosion
C Penetrating Corrosion
D Corrosion does not occur at all
Correct Answer: Penetrating Corrosion
High strength amalgam is achieved by_____________?
A Maximum matrix and minimum alloy phase
B Minimum matrix and maximum alloy phase
C Maximum matrix phase
D Minimum alloy phase
Correct Answer: Minimum matrix and maximum alloy phase
Once triturated, the Dental amalgam should be condensed with in_____________?
A 5 minutes
B 6 minutes
C 3 minutes
D 15 minutes
Correct Answer: 3 minutes
The solid solution of silver and mercury is called_______________?
A y1
B y2
C B1
D y
Correct Answer: y1
Advantage of minimum mercury technique or Eames technique is all Except________________?
A High strength
B Sets quickly
C Needs no squeezing of excess mercury
D Greater plasticity and adapts well to cavity walls
Correct Answer: Greater plasticity and adapts well to cavity walls
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