|
The gas used in welding and cutting of metals is |
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|
(a) |
ethyne |
(b) |
ethene |
(c) |
ethane |
(d) |
propene |
|
The gas used in welding and cutting of metals is |
|||||||
|
(a) |
ethyne |
(b) |
ethene |
(c) |
ethane |
(d) |
propene |