Which of the following combination of gases is used for m...
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.
i and ii
ii and iv
i and iii
ii and iv
Correct answer is C
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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