1 stars and solar system
2 biological diversity
3 Atmospheric pressure
4 Magnetism
5 Structure of atom
6 chemical reaction and their types
7 the structure of cell and micro-organism
8 diseases
9 reflection of light
10 sources of energy
11 electric current
12 properties of substance
13 metals and non –
metals
14 carbon and carbon compound
15 air
16 soil
17 agriculture
18 animal husbandry