A) \[{{C}_{2}}{{H}_{4}}\]
B) \[{{C}_{2}}{{H}_{6}}\]
C) \[CC{{l}_{4}}\]
D) \[CHC{{l}_{3}}\]
Correct Answer: A
Solution :
\[{{C}_{2}}{{H}_{4}}\](ethene) is unsaturated hydrocarbon hence it decolourises the colour of iodine solution.
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