Give the appropriate answer: A gaseous hydrocarbon commonly used for welding purposes.

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Solution

Acetylene ( $C_{2} H_{2}$ ) is the first member of the alkyne series.
Acetylene is used in oxyacetylene blowpipe flame for welding and cutting operations.
It is used as fuel.
The simplest alkyne is Ethyne, which is more commonly called acetylene.
Acetylene is a colorless gas.
Acetylene is a unsaturated hydrocarbons that contain Carbon-Carbon ( $C - C$ ) triple bond.
The chemical reaction is as follows.
$\underset{A c e t y l e n e}{C_{2} H_{2} (g)} + \underset{O x y g e n}{\frac{5}{2} O_{2} (g)} \to \underset{C a r b o n d i o i x d e}{2 C O_{2} (g)} + \underset{W a t e r}{H_{2} O (l)}$

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