Identify the term or substance based on the descriptions given below:
Hydrocarbon containing a triple bond used for welding purposes.

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Solution

Hydrocarbon containing triple bond, acetylene( $CH \equiv CH$ ) is used for welding purposes.
The hydrocarbon is acetylene. It produces a flame temperature of $~ 3100 ° C$ along with oxygen.
Acetylene has a high flame temperature which makes it suitable for gas welding steel.
The chemical reaction is as follows.
$\underset{A c e t y l e n e}{C H \equiv C H (g)} + \underset{O x y g e n}{\frac{5}{2} O_{2} (g)} \to \underset{C a r b o n d i o i x d e}{2 C O_{2} (g)} + \underset{W a t e r}{H_{2} O (g)}$

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