Which of the following combination of gases is used for metal welding? i. Oxygen and ethyne, ii. Hydrogen and ethyne, iii. Hydrogen and oxygen, iv. Ethyne, hydrogen and oxygen.

  • A i and ii
  • B ii and iv
  • C i and iii
  • D ii and iv
jamb 1992chemistry

The correct answer is C. i and iii

Oxyhydrogen is a mixture of hydrogen and oxygen gases.

This gaseous mixture is used for torches to process refractory materials and was the first gaseous mixture used for welding.

A gas torch that burns a mixture of acetylene and oxygen to produce a high-temperature flame (3,000°C or 5,400°F) that can weld or cut metal.

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