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Give reasons for the following : (i) ...

Give reasons for the following :
(i) Methane does not undergo addition reactions, but ethene does.
(ii) Ethyne is more reactive than ethane.
(iii) Hydrocarbons are excellent fuels.

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Ethyne is an unsaturated hydrocarbon with a triple covalent bond . Ethane is a saturated hydrocarbon and hecne is less reactive than ethyne .
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