From this chapter the topics removed are - Classification of elements, the Modern periodic table, Valency, Atomic number and Metallic & Non-metallic properties.
Periodic Classification
The basic concept of evolution like Evolution & Classifications are removed from this chapter.
Heredity and Evolution
The application of scattering in explaining the colour change of the sun at sunrise and sunset is removed for 2023.
The Human Eye and the Colourful World
We can see that concepts like Electric motors, Electromagnetic induction, Fleming’s Right-Hand Rule, etc.
Magnetic Effects of Current
The deleted topics are the Conservation of natural resources, Big Dams: advantages and limitations, Water harvesting, etc.