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.
How many electrons will be found in the nucleus of an atom with mass number 23 and 17 neutrons? ...
Which of the following halogens is liquid at room temperature? ...
The valence electrons of \(_{12}Mg\) are in the...
Which of the structural formal above is ethanoic acid is ...
2H2 + O22 → H2+O ΔH = -571kJ In the equation above, how much heat will be liberated if 12.0g of ...
Which of the following compounds would not give a precipitate with ammoniacal AgNO3 solution?...