In displacement reaction a more reactive element displaces less reactive element from its compounds generally salt solution ex Fe + CuSo4 - - FeSo4 + Cu
in this reaction iron being more reactive displace copper from copper sulphate solution this reaction is known as displacement reaction

Displacement Reaction in Chemistry
Displacement reaction is a type of chemical reaction where a more reactive element displaces a less reactive element from its compound. This reaction occurs when a more reactive element is added to a compound of a less reactive element, resulting in the less reactive element being displaced. This reaction is based on the reactivity series of metals, where metals are arranged in order of their reactivity.
Key Points:
- Displacement reaction involves the transfer of electrons from one element to another.
- The reactivity series helps predict which element will displace another in a reaction.
- Displacement reactions are commonly seen in single displacement reactions where a metal displaces another metal from a compound.
- For example, when iron is added to copper sulfate solution, iron displaces copper from the compound, forming iron sulfate and copper.
- Displacement reactions are important in various industrial processes and laboratory experiments.
The Human Heart and Circulatory System
The human heart is a vital organ that pumps blood throughout the body, providing oxygen and nutrients to cells while removing waste products. The circulatory system consists of the heart, blood vessels, and blood. The heart functions as a double pump, with the right side pumping deoxygenated blood to the lungs for oxygenation, and the left side pumping oxygenated blood to the rest of the body.
Key Points:
- The heart has four chambers - two atria and two ventricles, which work together to ensure proper blood flow.
- Blood vessels include arteries, veins, and capillaries, which transport blood to and from the heart and various parts of the body.
- The heart relies on electrical signals to coordinate its contractions, maintaining a regular heartbeat.
- The circulatory system plays a crucial role in maintaining homeostasis by regulating body temperature, pH levels, and transporting hormones.
- Regular exercise, a balanced diet, and avoiding smoking are essential for maintaining a healthy heart and circulatory system.