Theory:

Liquids take the form or shape of the container they are stored in.
 
Unit for measurement
  
A \(litre\) is a unit of measurement used to express the volume of liquid. For example, \(1\ - litre\) milk packet, \(20\ litres\) water can and so on. Other units are \(millilitre\) (\(ml\)), \(centilitre\) (\(cl\)), and \(kilolitre\) (\(kl\)).
Measuring tools
A liquid may be poured into a graduated container to easily determine its exact volume.
 
Container
Picture
Measuring jar
shutterstock148939844jpg.jpg
Graduated cylinder
6.png
Beakers
3.png
Pipette
4.png
Burette
5.png
Conical flask
shutterstock1752176606.jpg
 
Important!
Do you know?
 
An average adult has \(5\) to \(6\ litres\) of blood in his body. However, depending on their age, the amount varies from person to person.
Reference:
https://cdn.pixabay.com/photo/2016/06/18/18/19/beaker-1465437_1280.jpg
https://cdn.pixabay.com/photo/2020/10/05/14/04/burette-5629526_1280.png
https://cdn.pixabay.com/photo/2012/04/18/20/34/pipette-37813_1280.png
https://upload.wikimedia.org/wikipedia/commons/5/57/Glass_graduated_cylinder_25ml.jpg