They are 15 modules in total-:
1. Physics(5): 4 modules + 1 with solutions
2. Chemistry(5): 4 modules + 1 with solutions
3. Zoology(3): 2 modules + 1 with solutions
4. Botany(2): 2 modules

*I also have some from Aakash class 11th, they are not a whole set but there are few. If you want I can give those for free with these