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Question

From the following organic compounds given below, choose one compound in each case which relates to the description (i) to (iv): [Ethyne, Ethanol, Acetic acid, Ethene, Methane]
i) An unsaturated hydrocarbon used for welding purposes.

A
Ethyne
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B
Ethanol
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C
Acetic acid
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D
Ethene
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E
Methane
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Solution

The correct option is C Ethyne
Ethyne or acetylene is used for welding purpose as the reaction of acetylene with oxygen is highly exothermic.
It is also used for cutting metals.

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