What is the definition of a Double Displacement Reaction?

A double displacement is a type of chemical reaction that in which the reactant ions exchange places to form new products

Explanation:

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When two different atoms or groups of atoms are exchanged, then it is a double displacement reaction.

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.