Question

In which reaction do two compounds exchange their ions or radicals mutually to form new two compounds ?
(A) Displacement reaction
(B) Double displacement reaction
(C) Synthesis reaction
(D) Decomposition reaction

Answer 1

Hint : In this reaction, the two ionic compounds in the solution exchange their ions or radicals mutually to form two entirely new compounds. A reaction between silver nitrate and sodium chloride in the water is an example of the double displacement reaction.

Complete Step By Step Answer:
So, to solve this question we will know about the different kinds of given reactions.
So let’s start with the definition of Displacement reaction.
Displacement reaction or single displacement reaction is the one in which one kind of atom is replaced by the other kind of atom in the solution and results in a new product formation.
Next coming to the double displacement reaction :
So it is the reaction in which two compounds exchange their ions or radicals mutually to form new two compounds.
Let's have a look at the example:
 $ BaC{l_2} + N{a_2}S{O_4} \to BaS{O_4} + 2Nacl $
In these chloride and sulphide ions are exchanged .
Next, a synthesis reaction can be described as a reaction in which many reactants combine with each other to form a single product. This reaction is generally an exothermic reaction.
So, on the basis of the above discussion we can say that the correct answer is double displacement reaction.
Therefore, correct answer is option B. i.e. in double displacement reaction do two compounds exchange their ions or radicals mutually to form new two compounds.

Note :
A decomposition reaction can be defined as the reaction in which the single chemical reaction splits up into the many smaller compounds upon the action of heat or electric impulse. This process is generally an endothermic reaction which requires the heat.