Hello

Class 11th ( Physics , Chemistry ,  Botany and zoology ) notes are available from various online sources .

Here's  few options for you to explore:

1. Online Platforms and Websites:

BYJU'S : provides comprehensive notes for Class 11th PCB subjects .

Vedantu : offers free study material and notes for Physics , Chemistry and Biology .

Toppr : You can find well organised study notes and revision material .

2. Books:

NCERT Books : The official books for Class 11th are available in PDF format on the NCERT website .

ML Aggarwal : A good book for Chemistry and Physics .

Trueman's Biology : A popular book for Biology that covers key concepts .

3. Youtube Channels:

Physics Wallah : This channel has easy to understand videos and notes for Class 11th class .

Khan Academy : Free videos on various concepts in all three subjects .

For more details link below :

https://school.careers360.com/ncert/ncert-class-11-notes

Thank you