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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

The function of 2% potassium sulphate in a gypsum product is_____________?
A To regulate the setting expansion
B Regulate setting time
C Acts as retarder
D
Correct Answer: Regulate setting time
Finer particle size of silica______________?
A Slower the hygroscopic expansion
B Greater the hygroscopic expansion
C Normal setting expansion
D No setting expansion
Correct Answer: Greater the hygroscopic expansion
ADA specification number of gypsum products are described under____________?
A 1
B 4
C 12
D 25
Correct Answer: 25
Modiffiers are added to gypsum mainly to_______________?
A Modify setting time
B Modify setting expansion
C Modify strength
D Decrease the porosity
Correct Answer: Modify setting time
Placing cast under tap water is to be avoided as______________?
A H2O interferes with hygroscopic expansion
B H2O inhibits polymerization of dental resin
C H2O interferes with Crystallization of dihydrate
D Gypsum is slightly soluble in water and the surface of the cast will be eroded
Correct Answer: Gypsum is slightly soluble in water and the surface of the cast will be eroded
The β (Beta) hemihydrate of gypsum requires more water to float its powder particles because______________?
A They are more regular in shape and dense
B They are more regular in shape and highly porous
C They are more irregular in shape and porous
D They are more dense and prismatic in shape
Correct Answer: They are more irregular in shape and porous
In plaster of paris the setting time is primarily altered by_________________?
A Altering P / L Ratio
B Altering temperature of mixing water
C Speed and length of hand spatulation
D Addition of accelerators and retarders
Correct Answer: Addition of accelerators and retarders
Which is gypsum product_______________?
A Stone
B Plaster
C Investment
D All of the above
Correct Answer: All of the above
The most commonly used accelerator in gypsum product is___________________?
A Sodium fluoride
B Potassium fluoride
C Potassium sulfate
D Aluminium sulfate
Correct Answer: Potassium sulfate
The hygroscopic technique is associated with______________?
A Investment
B Hydrocolloids
C Amalgam
D Silicate
Correct Answer: Investment
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