Which of the following gases is used for welding?
Correct answer: C. Acetylene
- A. Methane
- B. Ethane
- C. Acetylene
- D. Ethene
Explanation
Acetylene burns with oxygen to produce an extremely hot flame, so the oxyacetylene flame is used for welding and cutting metals. Methane is also combustible, but it does not normally produce the intensely hot welding flame associated with acetylene.
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About Alkynes
Alkynes are unsaturated hydrocarbons containing a carbon-carbon triple bond, with sp-hybridised carbon atoms and a linear arrangement around the bond. The content includes nomenclature, preparation, acidity of terminal alkynes, and addition reactions with hydrogen, halogens, hydrogen halides and water, as well as oxidation.
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