The IIT-Professor Assisted Learning (PAL) video lectures for Class XI and Class XII can be accessed on You Tube through the links below. Many faculty members from various IITs have contributed to these lectures. Prof. Ravi Soni from the Dept. of Physics, IIT Delhi is the national coordinator and IIT Delhi has coordinated this entire effort with funds from MHRD. Over 600 hours of lectures in Physics, Chemistry, Maths and Biology are available for students.
Biology : Channel 19
www.youtube.com/channel/UCqiFTyCxFFMAN_lhAzIkdpA/videos
Chemistry : Channel 20
www.youtube.com/channel/UC3Zv0XxBjYlWMjbMv8ODE8Q/videos
Mathematics : Channel 21
www.youtube.com/channel/UCfz4W0rG8HoyyrrK6qNc1rA/videos
Physics : Channel 22
www.youtube.com/channel/UCwNr8peMxn8-Nc2V_RZsRvg/videos
These videos can also be accessed on Doordarshan Freedish DTH. Complete list of videos is available at (Channel 19,20,21 and 22.
Similar and more exhaustive list of online courses are available at:
Swayam Prabha | 34 DTH channels | India