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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

Solder and flux used for joining Elgiloy wires are_____________?
A Gold solder and borax flux
B Gold solder and fluoride flux
C Silver Solder and borax flux
D Silver solder and fluoride flux
Correct Answer: Silver solder and fluoride flux
Fins and spines on the casting is seen due to_______________?
A Prolonged heating:
B Rapid heating me
C Water film contamination
D Too high pressure during casting
Correct Answer: Rapid heating me
The castability of chromium-cobait base metal alloys when compared to gold based noble metal alloys is_______________?
A More
B Less
C Equal
D Depends on the alloy type
Correct Answer: Less
In Base metal alloys, Corrosion resistance occurs due to___________________?
A Passivity
B High Fusion Temperature
C High Molecular Weight
D Co-efficient of Thermal Expansion
Correct Answer: Passivity
The solvent flux used for base metal soldering is_______________?
A Borax
B Fluoride
C Rouge
D
Correct Answer: Borax
During soldering, the solidus temperature of the filler material should be_____________?
A Greater than the substrate material
B Lesser than the substrate material
C Equal to the substrate material
D Temperature not relevant
Correct Answer: Lesser than the substrate material
Which of the following increases castability of base metal alloys________________?
A Tin
B Beryllium
C Molybdenum
D Carbon
Correct Answer: Beryllium
Which of the following fuel gases used for soldering, has the highest heat content______________?
A Hydrogen
B Natural gas
C Acetylene
D Propane
Correct Answer: Propane
Binder in phosphate bonded investment is______________?
A Magnesium oxide & Phosphate
B Magnesium oxide & Phosphoric acid
C Magnesium oxide & Monoammonium phosphate
D Magnesium oxide & Ortho Phosphoric acid
Correct Answer: Magnesium oxide & Monoammonium phosphate
Which one of the following elements is NOT added is small amount to be used as grain refiners ?
A Iridium
B Ruthinium
C Indium
D Platinum
Correct Answer: Platinum
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