A) conc. \[{{H}_{2}}S{{O}_{4}}\]
B) Ammonical \[C{{u}_{2}}C{{l}_{2}}\]
C) Ammonical \[AgN{{O}_{3}}\]
D) Solution of \[B{{r}_{2}}\]in \[CC{{l}_{4}}\]
Correct Answer: D
Solution :
Solution of bromine in carbon tetrachloride is used to test for unsaturation of alkene. Red colour of bromine disappears due to the formation of colourless dibromo ethane \[({{C}_{2}}{{H}_{4}}B{{r}_{2}})\].
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