Question
Unsaturated hydrocarbons contain multiple bonds between the two C-atoms and show addition reactions. Give the test to distinguish ethane from ethene.

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$\text{A} \ \ \text{C}_4\text{H}_8\text{O}_2$
$\text{B} \ \ \text{C}_4\text{H}_{10}\text{O}$
$\text{C} \ \ \text{C}_4\text{H}_8\text{O}$
$\text{MnO}_2+4\text{HCl}\rightarrow\text{MnCl}_2+2\text{H}_2\text{O}+\text{Cl}_2$