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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

Dimensional stability of elastomeric impression material can be given in descending order as_____________?
A Polysulphide > polyether > Condensation silicone > Addition silicone
B polyether > Condensation silicone > Polysulphide > Addition silicone
C Addition silicone > polyether > Polysulphide > Condensation silicone
D Addition silicone> Condensation silicone > Polysulphide > polyether
Correct Answer: Addition silicone > polyether > Polysulphide > Condensation silicone
A laminate impression technique utilizes_______________?
A Syringe agar and chilled tray alginate
B Syringe agar and tray agar
C Syringe agar and impression compound
D Chilled alginate and impression compound
Correct Answer: Syringe agar and chilled tray alginate
Most flexible impression material______________?
A Impression compound
B Impression paste
C Addition silicone
D Alginate
Correct Answer: Impression compound
Which of the following is correct arrangement of impression material regarding linear contraction in ascending order ?
A Addition silicone < polyether < polysulfide < condensation silicone
B Addition silicone < polysulfide < Polyether < condensation silicone
C condensation silicone < polyether < polysulfide < Addition silicone
D condensation silicone < polysulfide < polyether < Addition silicone
Correct Answer: Addition silicone < polyether < polysulfide < condensation silicone
Which of the following best describes the working time of impression material ?
A After the start of appearing elastic properties of impression material
B Just after the start of appearing elastic properties of impression material
C The time for start of mixing till just before the start of appearing elastic properties of impression material
D Loss of lusture of impression material
Correct Answer: The time for start of mixing till just before the start of appearing elastic properties of impression material
Which of the following is used as surface hardener in Impression material ?
A 2% Potassium sulfate
B 0.2% Potassium sulfate
C 2% sodium sulfate
D 4% Potassium sulfate
Correct Answer: 2% Potassium sulfate
Which of the following is correct regarding chemical setting of condensation silicone_______________?
A Polymerization occurs with repeated elimination of small molecules
B Polymerization occurs with elimination of single byproduct
C By condensation of repeated molecules of monomers
D Condensation does not occur at all
Correct Answer: Polymerization occurs with repeated elimination of small molecules
Dimensional stability of hydrocolloid impressions may be achieved by_________________?
A Using less water powder ratio
B Storing the impression under water
C Prolonged manipulation
D Using humidor
Correct Answer: Using humidor
To make the vinyl Polysiloxane hydrophilic the following is added_______________?
A Mineral oil
B Surfactant
C Water
D Plasticizer
Correct Answer: Surfactant
The role of magnesium chloride in zinc oxide eugenol impression paste_________________?
A Retarder
B Modifier
C Plasticier
D Accelerator
Correct Answer: Accelerator
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