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Question

Which of the following gases is used for welding


A

Methane

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B

Ethane

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C

Acetylene

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D

Ethene

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Solution

The correct option is C

Acetylene


2CHCH+5O24CO2+2H2OΔH=1300KJ

The combustion of acetylene is highly exothermic and the heat produced during the combustion can be used for welding purposes in the form of oxy acetylene flame.


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