Water containing insoluble impurity is allowed to pass through the filter paper.
This process can also be used to separate dirt particles.
Impurity will settle down after some time.
Impurities that cannot be mixed completely and hence are visible.
Alum is used as a special chemical.
Impurities are insoluble like sand, chalk powder, etc.
This process is known as loading.
Sand is an insoluble impurity.
Worksheets for ICSE class 5 science
Support Services for ICSE class 5 science
Regular Classes for ICSE class 5 science