A) chlorine
B) \[\text{ }\!\!~\!\!\text{ NaCl}\]
C) \[\text{KI}\]
D) iodine solution
Correct Answer: A
Solution :
Key Idea: The more electronegative halogen displaces less electronegative halogen from its salt. \[\because \] \[C{{l}_{2}}\]is more electronegative than \[B{{r}_{2}}.\] \[\therefore \] \[C{{l}_{2}}\]displaces bromine from KBr \[\text{NaCl,}\,{{\text{I}}_{\text{2}}}\]and KI cannot displace bromine from KBr.
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