Which of the following fuel gases used for soldering, has the highest heat content______________?
Correct answer: C. Propane
- A. Hydrogen
- B. Natural gas
- C. Propane
- D. Acetylene
Explanation
Propane has the greatest heat content per unit volume among the listed fuel gases, which is why it is useful for soldering and heating. Acetylene produces a hotter oxy-fuel flame, but highest flame temperature and highest heat content are not the same measurement.
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