Question

define displacement reaction​

Answer 1

hii

{\displaystyle {\overset {0}{\color {Green}{\ce {Fe}}}}+{\overset {+2}{\color {Orange}{\ce {Cu}}}}{\overset {-2}{\color {Blue}{\ce {SO4}}}}\rightarrow {\overset {+2}{\color {Green}{\ce {Fe}}}}{\overset {-2}{\color {Blue}{\ce {SO4}}}}+{\overset {0}{\color {Orange}{\ce {Cu(v)}}}}}

A single-displacement reaction, also known as a single-replacement reaction, is a reaction by which one (or more) element(s) replaces an/other element(s) in a compound. It can be represented generically as:

A + B-C → A-C + B

Answer 2

$\huge\underline\mathfrak\pink{Displacement\:reaction}$

The reaction in which a high reactive element displaces the low reactive element is called displacement reaction.