A. Hydrogen
B. Natural gas
C. Acetylene
D. Propane
Related Mcqs:
- Which of the following fuel gases is the best choice of heat source to carry out soldering process ?
A. Propane
B. Acetylene
C. Natural gas
D. Hydrogen - Which of the following is function of fluoride flux in soldering process ?
A. It prevents the formation of copper oxide
B. It prevents the formation of chromium oxide or dissolves chromic oxide layer
C. It prevents the flow of material in undesirable area
D. Increase the strength of solder - 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 - The solvent flux used for base metal soldering is_______________?
A. Boric acid
A. Borax
B. Fluoride
C. Rouge - Sterilisation control for moist heat is “or” The efficacy of the moist heat sterilization technique commonly used to sterlilize laboratory ware and culture media is tested by using_______________?
A. using Bacillus stearo thermo philus
B. Using non-pathogenic strain of clostridium tetani
C. Using chemical indicator
D. Using methylene blue - Gases dissolved in molten metals are liberated when cooled giving rise to________________?
A. Suckback porosity
B. Gas inclusion porosity
C. Localized shrinkage porosity
D. Microporosity - The best fuel gas when used with oxygen is______________?
A. Hydrogen
B. Natural gas
C. Propane
D. Acetylene - Which one of the following categories of dental materials has the highest thermal conductivity_________________?
A. Unfilled acrylic plastics
B. Gold alloys
C. Porcelains
D. Zinc phosphate cements - The term ordered hardening heat treatment used in which of the following dental alloys ?
A. Gold-Copper
B. Nickel-Chromium
C. Nickel-Titanium
D. Silver-Palladium - Creep value of which of the following is the highest ?
A. Low copper amalgam alloy
B. Admix alloy
C. Single composition alloys
D. Creep value of all the above mentioned alloys is same
