For biology it's divided into two that is zoology and botany starting from zoology

Zoology - human reproduction , evolution, immunity, animal kingdom (only from NCERT) 

Botany- plant kingdom, organisms and population, ecosystem, plant reproduction biological classification

This are some very imp chapters with high waitage of biology . Coming to physics and chemistry.

Chemistry- organic (very imp.) , Solutions , chemical bonding (again very very imp) electrochemistry , chemistry in daily life ,.NOTE - do not ignore inorganic chemistry it makes difference during the exam

Physics- laws of motion (v imp) { not many questions ask from this chapter but it's the basic for all the physics chapter don't ignore it} ,,,, optics , work energy and power, electrostatic , current energy 

Hope uh are clear now all the best for ur exam