Chemistry
A reaction of a type: AB + CD ⟶ AD + CB, involves
(i) no chemical change
(ii) decomposition of AB and CD
(iii) exchange of ions of AB and CD
(iv) combination of AB and CD
Chemical Reaction
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Answer
exchange of ions of AB and CD
Reason — In the type of reaction called double displacement two compounds exchange their positive and negative radicals.
Example : AB + CD ⟶ AD + CB
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