2015 · Q108
Which one among the following fuels is used in gas welding?
General KnowledgeChemistry
- ALPG
- BEthylene
- CMethane
- DAcetylene
Explanation
Gas (oxy-fuel) welding uses acetylene with oxygen, whose flame reaches about 3,100°C — hot enough to melt steel. LPG, ethylene and methane burn with cooler flames unsuitable for welding. The answer is D.