Which of the following fuel gases is the best choice of heat source to carry out soldering process ?
Correct answer: C. Propane
- A. Natural gas
- B. Acetylene
- C. Propane
- D. Hydrogen
Explanation
Propane is commonly preferred for dental soldering because it provides adequate, controllable heat without the excessively intense flame of oxyacetylene. Acetylene may overheat or melt the thin components being joined.
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